Roy C wrote in post #8577957
The biggest problem with a sidekick as I see it is that it is more difficult to mount the lens in the field. But the advantage is the weight with it being almost a pound lighter than the full gimbal. I have not got to consider a future 500/4 as at my age (a frail pensioner LOL) the 300/2.8 is my absolute weight limit.
I would think that if you're only going to use the sidekick on a certain lens, i.e. the 300 f2.8, or 500 f4L, then why not KEEP the sidekick attached to the lens, then you just have to slip the sidekick into the ballhead's clamp and lock it in. When you're finished shooting, just take the lens/sidekick combo out.
That's one reason why I think the sidekick has an advantage over the full Wimberley Gimbal head. You don't need two tripods...one for a ball head, and one for the full Wimberley. (Unless you want to keep having to remove each head.)
I'm sure there are camera backpacks that can be formatted to fit a 300 f2.8L lens with sidekick attached. Along with a photographer's other equipment. (Or even a 400 f2.8L, or 500 f4L with sidekick attached).
Just seems a lot more convenient to me.
Also according to a few photographers on Fred Miranda, the sidekick handles the 400 f2.8L I.S. lens quite nicely, and SAFELY!!
Just my two cents.