I agree with most of what Flux said. They are the easiest to breed (easier than Red Runner) of all the colonies I keep. Their biggest downside for me is containing them in an area within the enclosure where they can be seen long enough to be had by the chameleon. They move a lot, which elicits an immediate response even from fussy eaters, but the problem is they move TOO fast. They twitch a lot and are unpredictable, not to mention climb out of most anything unless you use some sort of bug barrier/vaseline as previously mentioned. This can be a tremendous problem for a chameleon that isn't big like a veiled/oustalet, whereas something smaller like a Jackson or younger cham just simply cannot keep up. I put a teflon-based bug barrier on all my pop bottles in my cham enclosures, and I dump 10-15 roaches in there at one feeding in the hopes that my chams pick out 3-4 of them. The rest are beneath the pot of the plant in the cage within a couple hours. I'm thinking of buying a flying gecko or two just to stick in all my enclosures to clean up the loose roaches. This worked with my jacksons' cage, especially since the gecko remains hidden during the day and hunts at night while the chams sleep.
So, in short, I wouldn't recommend these unless you're really set on using a slick cup/bowl to feed out of and have vaseline/bug barrier on-hand, or you have no furnishings in your cages like I do like cork bark or plants that the roaches can hide under because they WILL hide and be a waste. If you have a purely branch-based enclosure it could work great, and the ones that get away you can just stick a piece of fruit/papaya out to get the roaches to come back out, but even that's tough since they will hide in the dark and generally wait until night to come out when the chams are fast asleep.
Red Runners are probably a better bang-for-the-buck. Equally as fast, not prone to burrowing into substrate like lobsters, and appear to be stupid like crickets in that they don't immediately hide when placed into a new enclosure. They can't climb smooth surfaces, and they're even softer bodied. They do not reach the overall size lobsters do, however. Mine would probably breed better if I fixed up their sterlite tub and made it more humid.