Well, when you start encountering mobs that you cant kill in one gravity pole channel, you have to set them up for PP anyway. When you factor in that you are then burning both cooldowns anyway, and the time spent grouping the mobs up, it doesnt feel like it will be that much worse, another 5 or 6 tics of PP perhaps.
The thing is, later mobs can really hurt, like i dont even know how people who arent kinos fight them, they can do 3K+ damage a hit, and sometimes you run into groups of 5-6 of them. Ive found myself creeping through, casting sleep, gravity poling way out ahead of me, telekenesising single mobs to be closer to me then taking them out with bloodbath+pp channeling.
Its going to take me a while to collect the gear i need before i switch, so maybe ill end up deciding against it down the line, but it seems like a good idea right now. I still have a lot of potential damage locked up in attributes that can be further raised, and im still using a level 170 weapon.
I guess the point is i dont think full con is bad for this build, so if someone wants to go full con, i wouldnt advise against it, and if not, theres what 400 int looks like.