I don’t know if it’s “worth it” since that’s kind of personal valuation. But, the handheld will swing potentially loosening the nozzle holder. I’ve not really had that problem with the RW45 but I did get a Hypertherm with the CNC torch. It stands straight so the cord won’t be pulling at it as the head travels around the table. But to really take advantage of it, you want to fasten it in two spots to really lock it down and prevent a levering action (depending on the torch, you may be able to shorten the CNC vertical tube that would make for less of a lever action on the torch).
So I guess it’s a “maybe” 
The other benefit is if you get both torches you can leave the machine torch on the Crossfire and use the hand torch without having to take it off the table.
