Yamaha Reface DX Keyboard Synth: worth it?

[Re8et]

I saw this synth at a local shop, played a bit with it, I think it has some very nice sound,
the keyboard response is very nice, and it could be a nice Midi keyboard also.
Has anyone one of the reface, and particularly the Dx, that feels to chime in??
It looks to me that is somehow limited in its Synth engine, but it also the most
advanced of the reface line, as synth engine goes, and it has also some pattern-sequencer engine stuff..
a kind of looper.