No problem. I'm actually suprised you have the same grease - I didn't think it was all that common - very cool. I just want to clarify, not a big issue or anything, but here goes - Oh, and I stand corrected on the supplied grease - not Prothane but Energy Suspension grease - a little technicality.
Anyway, I don't think the supplied grease would cause a shifting problem I just think it is, lets say - more restrictive to shifter movement than the Phil Wood grease is. And certainly this matter is one of personal preference too - I like the stick to autocenter into neutral very freely and I found the Energy Susp grease to be a bit to sticky for my likings - for me, if the grease decreases feedback through the shifter it's too restrictive. Now, I didn't give the Energy Susp grease any time to loosen up or anything like that so maybe with time it gets smoother and less sticky - you all that have used the supplied grease for a while can post feedback along those lines.