We just bought a bunkhouse TT with dual slides and a center island. We love the center island, looks great and provides more counter space when preparing meals. We have an outside door in the bathroom so access on the road isn't an issue. The only set back is accessing the frig but it's no big deal to open the kitchen slide a few feet to open the frig door.
Everyone gets second thoughts about our choices. We really like this TT but now that we have it there are a couple of things that I wish I considered. The bunk bed area is small and cave like. I wish we had picked one with a real "room".
Anyway, we really like our center island and wouldn't pick anything else.