The double bump of a Blacks ALPS has to be one of the most bizarre engineering achievements ever.
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(http://web.archive.org/web/20041129051441/http://www5f.biglobe.ne.jp/~silencium/keyboard/gif/dellat101w.gif)
I have an 80's Cherry G80-1800HAU that was a Black MX board that I swapped Blue MX's from an 80's laptop keyboard and I bet you anything their force graph would look like that. I actually love the board, but it does more of a crunch than a clean click when you type. It's like crushing a leetle baby cheeto with every key stroke.
As for the black tatcile non-clicky ALPS, I don't mind them if the board is clean and the switches aren't dirty. I bought a car load of them once and the clean ones were fun to type on other than the echo from the plate in them but my ears hear that in all plate mounted switch boards, it's a curse. IMO the Dell AT101W is one of the more underrated keyboards in that it's so moddable, very well built and has a good layout.
Check out this killer AT101 mod. It now houses PINK ALPS from a board that I sold him.... for $40. 2 weeks later the same model of Pink ALPS Dell board went for nearly $400 IIRC on ebay. :)
(http://kbdholic.net/img/dell-saver/img_3932.jpg)