Best Small Bag or System to Carry Extra Lens + Flash Using RS DR-1

Calling RS DR-1 Users and all,
What do you use to carry flash/es, 100mm Macro lens and a little fast lens like Sigma 30mm along with using the Rapid Strap DR-1?

I know the weight is suck with double bodies plus 70-200mm f/2.8 IS but it is great to have everything handy as I found they very useful while shooting Wedding. An assistance could take care of all these issue but I do not have that lexury yet.

Please suggest a system that works for you. Thanks for your help!

Keeping an eye on this thread for suggestions too.

@op- I currently use the dr-1 with a retro 20 back on top of the strap swing toward my back side. While that does work. It's somewhat cumbersome.

Wow... the Retro is raw 120 bucks? So pricey.

Domke F5XB would take that - can be worn as a shoulder bag or slid onto a belt if you prefer.

any more double strap users? i'm looking for something to use with my new dr-2. seems the retro lens changer 3 might be a little bulky now with the double strap.

Tried the DR-2 with a Retro Lens Changer 3 over the weekend at a festival. The Retro LC3 was a little big to hold with the 2 cameras.

Anymore double strap users here?