They do seem to be quite a shy species, I only see mine at night when its dark. Love the coloration & patterning of these though.I honestly couldn't tell you as I've only just started getting into dwarf species myself after a little over a year of keeping Ts (I didn't want to waste the small faunariums I use for rearing juvies so a few dwarfs seemed like a good idea), I've raised quite a few slings of larger species though.
I got 2 of these at the end of July, the 0.5cm one sealed itself away for 3 days and then moulted about a fortnight ago, the 1cm one stopped eating about a week ago but is out occasionally.