A little late to the dance but I happen to have bought both G2L & Polytach C4 same night @ Cabellas when they had SF on sale. As a result of the sale, PT was $10 more expensive. Got them out in the dark, on the outskirts of the parking lot.
PT was much brighter, much more throw, kinda nice defined ring of spill. Don't know which switch I like better. SF feels a little more substantial & MAYBE tougher but I have dropped the PT numerous times & it is unaffected. I still very much like the G2L also - have them in all the cars.
I have a few different SF's (L1, L2's, U2, St Min's) & love them all, have that PT which is a nice little light, also have a Polystinger C4 & that is really nice light that has survived some pretty hard drops on concrete & doesn't even notice it.