Anyone have experience with natural slate tile in a shower?

[iwrock]

We're looking at installing natural slate tile in the baths at my place - on the floors and for the shower walls.

Does anyone here have any experience with it? I'm mainly concerned with long term durability - most folks online complain about it getting discolored and wearing over time. I don't mind treating/sealing it every so often if it will keep looking good - but it would seem people online buy a house with it, leave it untreated and complain...