As Interceptor mentioned, the V6K can be made with flat fronts if you order at least 10 of them.
But I think the Jaunt G18/G18 plus may be a better option than the Scubalamp V6K/V6K pro. The main benefits of the G18: (a) 18k lumens vs 12k, so half a stop brighter; (b) battery compartment can be swapped without removing the whole light from your rig; © a much more responsive and larger control button with the ability to program two seperate light exposure levels; (d) 5000k color temperature vs 5600k, so should be able to set your white balance cooler and get nicer blue water backgrounds; and (e) the G18 Plus is 200g less negative in the water than the V6K Pro. So power and ergonomics.
On the other hand, Scubalamp has two advantages: (a) they make blue (ambient light) filters for the V6Ks while Jaunt doesn't yet and (b) they apparently now make a remote trigger that can be attached to your camera handle and can turn multiple of their lights on and off simultaneously.
For full disclosure, I've been a dealer for Scubalamp since last year and I'm now also a dealer for Jaunt.