So now that I've played with my T6 stock I'd say there are definite pros and cons.
Pros,
It's better looking,
It has a pistol grip
The collapsable feature is very nice.
The storage compartment in the grip and the sling swivel in the buttstock are both nicer than I'd have expected.
Cons,
The rear half of the buttstock has a noticable rattle in all positions.
The scout scope rail allows the use of iron sights however it does make it harder to use them.
The "cheek weld" is ambigious at best for either scope or irons.
The blade bayonnet will affect your forend grip even on the slotted T-6 stocks.
The "S.A.W." style grip is appreciably too acute a grip angle as compared to the M16 type.
All in all I'd buy another one for an SKS that wasn't valuable otherwise. For me having appropriate length of pull is a big deal so this stock is a good buy. Considering the price it could have been better executed however I'll admit that it didn't take any special fitting aside from the gas tube cover which had more to do with rusted in pins than anything Tapco did. The balance of the rifle is just ahead of the magazine making two handed shooting relatively fast provided your off hand is close to the mag.
Everything I've read about replacement magazines for the SKS included how they aren't as reliable as the original, plus most/all preclude the bolt lock open feature which is so important to me that I won't own an AK!