Hate to say this, but they are going to have the same load procedure for an RMC hybrid as they did with Gwazi; especially using the trains they do. Steel Vengeance, Storm Chaser and Twisted Timbers (and some others I'm sure) definitely require belt check first then lapbar (to be lowered by ride attendant). This causes a lot of slowdowns when people don't listen, lower the lapbar and they have to unlock the lapbars to redo them over and over all day. I see this being a big issue with this park, since there are a lot more tourists from around the world who may not speak/understand the language.
With that said, they were very fast at Steel Vengeance...but that's Cedar Point using their best crew (and used 4 checking restraints- 2 on each side). Storm Chaser (at Kentucky Kingdom) was slow like watching a pot of water to boil or paint to dry waiting for a dispatch...and the park was dead so I'd hate to see it if it were actually busy. Even with one train wait, it was about a 7-10 min dispatch time on average the times I rode it (and was running 2 trains). Hopefully being the new attraction (at BGT) in 2020, they'll at least be fairly quick the first year at least. However judging by some of the other rides (especially Montu...sometimes), I see the enthusiasm deteriorate over time with slow loading and no hustle. I would love for them to prove me wrong however. Most of the slow loading issues seemed to have come about after the parks were sold and then went public with penny pinchers calling the shots.