Older post, but for anyone else considering this, I highly recommend it. I was going to pull the trigger on conicals, but because I need to pull my keezer from the wall to swap kegs, cold crashing in the fermenter is important to me so I don't kick up sediment in the kegs when moving the keezer. I really didn't want the large expense of a glycol chiller or ferment chamber to fit conicals.
I use two of the 6 gallon torpedos to ferment in and absolutely love it. I also use the floating dip tube.
Some of the pros:
Can ferment full 5 gallon batches
Stainless steel fermenter
Can pressure ferment/spund
Closed transfers to kegs
I use a gas to gas jumper to purge serving keg of O2 with fermentation CO2
Extended cold crashing/lagering with no fear of O2 ingress
Fits in my fermentation mini fridges
Floating dip tube keeps all trub out of serving keg
Easy to take samples for gravity reading/tasting
I built a 25" pedestal for my fermentation fridges so pressure from inside the torpedos from spunding/pressure fermenting makes it easy to gravity transfer to my serving kegs. I also use tilt hydrometers so I know when I'm at FG and can begin crashing/lagering.