Depends on how many strings you need. TI looks to only be offering 36 in four string sets right now, though you can get 5 or 6 string sets flat or round in 34. [edit: wrong, they do offer some 5 string sets]
The length can be tricky. Alembic tends to be somewhat flexible, shall we say, on the distance between the tailpiece and bridge, so on some extra long scale instruments you might get away with a 34 set and others not.
If you try to use shorter scale strings, you might end up with the silk windings in the nut - but then you can also shave some of this off (after applying some nail polish or similar, to prevent further unravelling).
(Message edited by bob on June 06, 2006)