(crust first).
I do that. Ok, not really, but sort of. The 1st bite is the tip (minhag avosainu) but then I rip off the crust and eat that, while the rest of the slice cools off, so the cheese does not come off in one long pull.
Plus, the crust is my least favorite part, so best to get that done with early on and then wash it down with the good part