[url=http://"http://support.wasdkeyboards.com/"]WASD Keyboards[/url] made a wonderful job, overall I'm very satisfied! They did have to reprint a couple of keys, but the difference from the specs was very minor, barely noticeable, and they were quick and reactive to the problem, even gave away a few stabilizer inserts I needed for free
The material is pleasant to the touch, which was my main concern. It's still ABS but I find the touch feeling on par with the original keys from Das Keyboard, even slightly better, perhaps a tad rougher and thus less slippery due to the UV print process - that might not be true if you compare to the printed keycaps of the Professional version, I couldn't say since I have the Ultimate.
If you want to swap the keycaps on the Das, don't forget to get those Costar stabilizer inserts, you'll need 6 pairs (the spacebar has Cherry stabilizers and doesn't need any); Metadot had the stupid idea of gluing their inserts to the keycaps, so most of them can't be recovered! Other than that, the keycaps are completely compatible with the Das Keyboard.
The colours are quite correctly rendered, though if you look the keycaps from a low angle you may notice process artefacts. It looks a little like the result of a dot printer: successive horizontal bands. But it's only the background, and if you look at extreme angles under a grazing light source, under normal circumstances it is not visible. You can see what I mean on the right of the photograph below, especially the numpad return key. The foreground has zero defect or artefact, and it's much sharper than laser etching of course.
For reference, the font I used is Overlock, this is an open-source font, easy to find. Don't forget to remove the fonts from the .svg when you send it to WASD, it's not mentioned on their website but you have to do it. Here's how:
I'm really happy with it, the only small regret is the initial choice of an Ultimate, for some obscure reason they decided not to print the "daskeyboard" logo and the media keys, the Professional version is looking better IMHO. At least they kept the red edge of the volume button.In Inkscape:
Select all of your text/fonts, then go Path > Object to Path (Ctrl + Shift + C)
In Illustrator:
Select all of your text/fonts, then go Object > Expand… (Expand both Stroke and Fill)