Interesting decision.
I while ago I replaced my TT2K's (the rear was worn out) with Pasela TG's. The TG is a much lighter, thin-sidewall, kevlar-belted and -beaded foldable tire.
I immediately started getting rear flats. So I put the old front TT2K on the rear, and left a TG on the front. This combo is working quite well, and the lighter front tire is a noticeable improvement.
Good luck with your plan!
RichC
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Training: 2002 Fuji Roubaix Pro (105 triple)
Commuting/Daytripping: 2001 Airborne Carpe Diem (Ultegra/XTR, touring wheels)
Commuting/Touring: 2000 Novara Randonee (Sora/Tiagra/LX, fenders, lights)