I used to have one of those A frames also,but it was too wide for my applications when i moved into my studio room i have now,(Which i didn't have so many devices/Synths back then)
It was great for holding keys as well as racks,i bought a couple of extra Tiers for it too,To hold my drum machines i was using,it also was great for holding my Atari st,and most of my setup back fitted onto the A frame.....
I would have another one of those if i had more room to house a few of my keyboards that are not sitting on stands at the moment but stood around the studio
I sold my A frame earlier this year,I don't miss it,but it was useful....they're very lightweight being aluminium and are quite sturdy even with 3 Main synths on,the one i had only allowed up to 76 note synths...
I've never used one on stage as it was always too bulky and fiddly to put together after being broken down and they are not really designed to be dismantled at speed plus it took up quite a lot of room in the Vanwith the other gear as i didnt have a carry case for it,so it was far easier to use the QL stands as they assemble together in next to no time
And no i don't use a slide Rope ...LOL there is a gap between the Raven and the Trinity which although the pics don't really show it is adequate for me to get in there,I like to have my gear easily accesible,helps productivity...