I have a handful of these things, and I use them all the time.
Most common use is portrait photography with multiple Nikon SB600 and 800's- usually 5 or 6 total flashes.
They will NOT work using any of the Nikon CLS modes. These rely on preflashes to communicate with between the camera/flashes, and the poor little Morris doesn't know how to talk that language.
However, I am not a big fan of the Nikon CLS for portraits (I get results that are too eratic)- so I do all my portraits with pure manual exposures. (Not the CLS-MANUAL setting, but pure manual). This means I manually dial in the flash power on each unit, and let the Morris units trigger from a single flash on my camera- usually the built-in flash on my D70 is enough to do it.
The whole setup works great.
They seem cheaply made, but have held up to quite a bit of use. Definitely a much better deal for me than the Nikon SU-4 since they are half the price.
Since they don't rotate in as many directions as the SU-4, it can sometimes be a bit of a challenge getting the flash and sensor in the right direction, but it usually works out. They are fast enough to daisy chain.
[3 of 4 customers found this review helpful]
Does not work with my Canon 580 EX flash or my Sigma EF-500 Super DG
Will not work with my Minolta 5D, does work with my Minolta point and shoot.