Dual or triple speedlight / flashgun mounting bracket

I use a multiple flash mounting bar during
product shoot where I need to have a diverse number of setups running
simultaneously, but something more compact is also useful. In that
article, I listed other flash mounting devices that allow multiple
speedlights to be hooked up on one light-stand. Since then, I've
discovered this triple flash mounting connector - RPS Lighting Triple Flash/Umbrella Mount (vendor) -  and it is superior to  others that I've tried.

What sets RPS Lighting Triple Flash/Umbrella Mount (vendor) from
other similar devices, is that the flash cold shoe can be rotated. This
doesn't seem like much, but when you try and add wireless flash
transmitters like the PocketWizard TT5, then the bulk of those wireless
transmitters get in the way. By rotating the flash trigger by 90
degrees, you can more easily accommodate two or three wireless triggers
and the speedlights. You then simply rotate the flash heads to have the
flashes point in the correct direction - into your umbrella.

It's a simple tweak to this kind of device,
but it makes all the difference when using multiple speedlights with
wireless triggers, on a single umbrella.