I think I like the black alps better...sigh.
here are some pics:
The donor board is an old AEK I got off of a customer site. They had a bunch of stuff going to the dumpster and I was able to grab this before it got chucked.

AEK back

pulled the keys to reveal the orange alps. pretty dirty but not unexpected.

here is the filco tenkeyless(was a white XM) with some of the orange alps in place for testing.

with the upper assemblys removed. the lower assemblys look the same as in the AEK.if there is a difference *aside from color* I can't see it.

parts is parts

not a good pic but this particular key was the enter key on the numpad. I ended up using it as the enter key on the filco. I think its a white alps but don't know what the black pieces are on the slider.

here you can see the white alps enter key on the numpad.

its all halloween looking now.

....

all done....
they are lighter in feel then the black alps, someone else has said smoother. I guess.
but they aren't such a radical departure then the black alps. not like it is when going to the fukka.
while I haven't tried a whole lot of alps switches, the minor change I feel between the orange and the black is interesting; if only because maybe ALPS was trying to cover the whole range of feel in small steps across the product line?
If it matters, the pic shows the board as pretty filthy, I wasn't sure what to expect when I pulled the keys. But the insides were clean, and the leaf, spring and slider looked new to me. there was no obvious wear that I could see.
I have enough black alps upper assemblys for a tenkeyless board. If anyone wants them, let me know.