Mine took a little getting used to at first. I'd have it set for highway riding and would sometimes rev unintentionally while maneuvering at low speeds. (Thank goodness for friction point and clutch control.) Now, I'm pretty used to it.
I do find that sometimes on weekend jaunts when my cruising speed is about 15-20mph slower than the commute speed I will spin it around an start tweaking up until it is just right for the slower speed. Then Monday morning I'll start bumping it up bit by bit until it is back to the commute/public raceway setting.
It makes it easier to just open my hands and just palm the grips while keeping the throttle consistent. On lazy rides without a lot of traffic I've been known to just keep a few fingers on it to keep things going while sort of lounging back against the backrest.
It does remind me if I don't close the cuff on my mesh jacket by poking itself up the sleeve edge until I close the cuff a little.
Takes some getting used to, and you need to tweak it, even spin it back around to readjust once to match how you are riding that day, but mine stays on the bike. I would like a breakaway cruise control eventually, but I find the CB to be a handy little, inexpensive gadget that does what it claims. How you use it or adapt with it is up to you.