Even things that it hits super effective aren't that frightened by 'vire. I typically switch in donphan on a predicted thunderpunch/bolt, and even if its carrying ice punch, its usually at least a 3hko.
Tangrowth already shurgs off Gyra's Ice Fang, so that isn't much of an awsome thing that it shrugs off Vire's ice punch. See, if anyone was smart enough, they would know that there would be a lot of switching on the opponents side, so they would take the liberty to set up spikes/Toxic Spikes/SR. Now, you'll say "I'll just send in my Tentacruel", well they EQ you or T-Punch you and there you have it. The more you switch, the more HP is taken from you and the easier it is for people to out-predict you.I find Electivire to be quite overrated. Even if it gets it's boost, which is unlikely because I am careful with my Thunderbolts, it's never swept me. One time, a guy passed a swords dance and +6 speed to it, and I still beat it with some careful prediction.
I used Tentacruel to ensure I had no spikes on my side, and set up a quick layer of Toxic Spikes.
I waited for his baton pass recipient (electivire) to come in as I leech seeded Ninjask with Celebi.
Electivire shows up. Celebi takes an ice punch and psychics it.
I switch to Tentacruel to take the ice punch. EQs you right there.
I switch to Porygon2 who absorbs the Thunderpunch with Motor Drive. See, I wouldn't use Thunderpunch. I would have used EQ. But w/e.
I switched to Celebi to take the cross chop, and it died from all the residual damage.
Electivire lacks the attacking power to get the job done. Even if Ice Punch is super effective, most pokemon barring Dragons can shrug it off. Tangrowth and Celebi are excellent counters.
Tangrowth already shurgs off Gyra's Ice Fang, so that isn't much of an awsome thing that it shrugs off Vire's ice punch. See, if anyone was smart enough, they would know that there would be a lot of switching on the opponents side, so they would take the liberty to set up spikes/Toxic Spikes/SR. Now, you'll say "I'll just send in my Tentacruel", well they EQ you or T-Punch you and there you have it. The more you switch, the more HP is taken from you and the easier it is for people to out-predict you.
Also, has anybody else tried Low Kick on Vire? It doesn't hit Blissey too hard, but nails other threats just as hard (or harder) and with 100% accuracy (TTar, Rhyperior, Regis, etc). I've tried it a few times, Blissey still doesn't like eating an EB Low Kick from his huge attack, and NOT missing random other things is nice.