I have an 890 but haven't tried it out yet because of the patch-size issue. However you don't need to cut the side off a wedge to hide the numbers, you just adjust the guide rails so that the numbers are out of the reading area.
I have the little Stouffer wedge where the patches are too small and the strip is not wide enough. I plan to tape it to some paper so that it feeds cleanly but haven't tested that yet. I also suspect that the patch-size issue can be solved by putting a smaller mask in the densitometer so that it can see only a small piece of film. That will change the readings of course, but readings are effectively relative anyway.
PS: I highly recommend the "Edit Post" button. Means you can append stuff instead of putting up 50 posts.