I've not tried it, but I don't think BP Agility -> Heracross is going to be too good a set:
1. Gligar has a 4x weakness that might very well be exploited. It could run Yache Berry, but then it would have no Leftovers, which means it's likely only going to be able to Baton Pass once (barring heavy Wish / Healing Wish support). If Heracross should fail for whatever reason, you've lost two Pokemon.
2. Heracross is going to take a hit as it comes in. It has neither decent defenses nor recovery, so to pull off a sweep it's going to need to KO all its opponents in a hit. But since it doesn't have decent defenses it's not going to be able to Swords Dance, and using Flame Orb / Toxic Orb isn't going to do anything for its longevity (it's already taking a hit as it comes in ...).
3. Gligar can also Baton Pass Swords Dance, but passing two moves isn't easy at all. You'll need screen support to go along, taking up at least three slots on the team.
Overall it doesn't look likely at all that Heracross will get more than one kill a match. I'd expect it to get one kill and then die to a priority move, or at best get two kills while getting Intimidate spammed.