sandslash has a good physical bulk he can easy use rapid spin, it isn't bad.
I reckon this has a great chance at OU once Sand Rush is released. Sandslash's Stone Edge is actually somewhat more powerful than Exca's Rock Slide, it has more variety in its attacking options (Night Slash!), and it's a great offensive spinner. It's in a whole other league to something like Stoutland.
Well Sandslash has approximately 30% better bulk in virtue of its defensive stats. Ground / Steel is a much better defensive typing than pure Ground, imo, providing some very nifty resistances. For instance, Excadrill has little to fear from Skarmory's Brave Bird, and it could set up on SubCM Latias. Excadrill has a quad rock resist and is immune to Toxic Spikes. Excadrill also takes priorities much better than Sandslash, being resistant to ExtremeSpeed, Sucker Punch, Bullet Punch, and neutral to Ice Shard.
There's also the Speed issue - Adamant Sandslash is slower than a base Spe 90 mon with a + Spe nature. Thankfully, that still makes it faster than Scarf Rotom-W, but there are plenty of Scarfers to check Sandslash, unlike Excadrill's case.
I'd say Sandslash can definitely fit Excadrill role as a Sand Sweeper, since it does possess great Speed, power, and coverage. It also has Rapid Spin, which is useful. However, it will most definitely be not a dominant force as Excadrill - I wouldn't be surprised if Sand Rush Sandslash couldn't make the OU cutoff.
I think Sandslash NEEDS Life Orb if it wants to sweep. Unlike Excadrill, it needs all the power it can get.
There's also the Speed issue - Adamant Sandslash is slower than a base Spe 90 mon with a + Spe nature. Thankfully, that still makes it faster than Scarf Rotom-W, but there are plenty of Scarfers to check Sandslash, unlike Excadrill's case.
Sandslash was pretty "meh" when I used it. Even at +2, it still wasn't strong enough to take out anything with bulk and it's dead weight if its weather isn't up. The difference between 100 Base Attack and 135 Base Attack is so significant, I have trouble even comparing it to Excadrill, who (as Pocket mentioned) also has better typing with which to set up. I don't really think it's worth running unless you need a fast spinner. Stoutland has better coverage as a Sand Rush abuser (and doesn't have problems with fast Scarfers), and Landorus-I/RP Landorus-T are all-around better as late-game cleaners. I kind of hope my assessment is wrong though...I like SandSlash a lot :(
BANDED Adamant max attack ice shard on a 0 investment sandslash
68.7% - 81.1%
I'm not going to bother running calcs on landorus...pretty sure we all know it will die
Just sayin, sandslash doesn't have trouble with any of the priority attackers. However, it does indeed sacrifice power to do that :/ can't get as many ohkos at +4 as I'd like. *shrugs* I guess it's all up to preference
From Mamoswine, I'm assuming?
Sandslash makes for a very interesting alternative to Donphan on Sun teams. Both provide access to SR and Rapid Spin, but in exchange less power and bulk, you get a Pokemon who has the capability of outrunning base 110's in opposing Sand with minimal speed investment of 40 Spe EV's. Most importantly he can outspeed Terrakion and Lati@s in the Sand which are often used as offensive pieces for Sand teams. Still 2HKO's Terrakion even without investment. I think if someone is using offensive Donphan on a sun team they should definitely look into incorporating LO Sandslash on their team. Just some food for thought.
Sandslash makes for a very interesting alternative to Donphan on Sun teams. Both provide access to SR and Rapid Spin, but in exchange less power and bulk, you get a Pokemon who has the capability of outrunning base 110's in opposing Sand with minimal speed investment of 40 Spe EV's. Most importantly he can outspeed Terrakion and Lati@s in the Sand which are often used as offensive pieces for Sand teams. Still 2HKO's Terrakion even without investment. I think if someone is using offensive Donphan on a sun team they should definitely look into incorporating LO Sandslash on their team. Just some food for thought.