Look at what a company called triclawps has to offer. I want to buy their backpack combo.I currently have a carbon fiber manfretto with the701 head and plates. I use two tripods, but I want to cut some weight with a second tripod and also have both my heads be the same too, I can than mix and match my spotter, binos and the claw which is an awesome gun rest by the way. I like to have the ability to lock a critter up in one tripod with my binos than slide over to my gun in the claw to take the shot.
I have a pistol grip head for my other tripod, but going away I love the 701, its better for glassing with and shooting off of, Take Care JLG.