[quote name='bluejay' timestamp='1326564580' post='1498968']
........... it should mostly be a matter of practicing on the fretless until I sound acceptable
[/quote]
Maybe I was lucky, but I took to fretless almost instantly - had to do a bit of work on intonation, especially up at the dusty end, but got the instrument on Tuesday & played a gig with it (only instrument) on the Saturday.
The only tip I can offer is that I found I played open strings more frequently rather than fretting(!)/fingering the note on a lower string, as this gave my ear a reference point for intonation. I did this less as my confidence grew, but still did it occasionally.
G.