The Intova 2000 is a basic strobe. I sold a slightly updated model for about a year from UltraMax the OEM. It is manual only with 4 power settings.
Reports from users were that it was ok, but it only has a 60 degree beam and is bulky and very buoyant.
The 2000 is an older design. It does not have a sealed battery compartment, if it floods, it's toast.
I would look at a better strobe. If you want TTL there is also the new Sea & Sea YS-01, much wider beam angle, power, adjustablity and a target light.
I am using the 2000 at the moment, No TTL capacity, just fibre optic trigger, using it with a Canon G9 in the ikelite housing and the whole deal is just slightly negative in the water, the battery cap is well sealed with 2 O rings, when for a dive on the weekend to 23mtrs and after the dive found i had left the cap only half screwed in, but no water entry into the strobe. It has been a good package for me to start with on the Canon housing but now i have TTL capacity i might start looking at a better strobe :-)