Tablets do work but you MUST enable "mousehack mouse" in ports-panel (or in input-panel) or mouse will only jump around randomly. (because table is absolute, not relative pointing device like real mouse)
No idea about pressure sensitivity (but I guess it won't work). I have only tested tablet compatibility with basic wacom tablet without pressure sensitivity feature.
Note that Amiga-side drivers only work with serial tablets, not with USB (and even with USB Amiga drivers it wouldn't work because Windows manages all USB devices)
"Donate a tablet and I'll think about it"