@fuzzybabybunny SCR's have done some of the most extreme expedition diving in history thanks to GUE/WKPP. CCR's are more versatile, sure, but it all depends on what you're doing.
CCR scrubbers are on average good for about 6 hours of diving. Some longer, some shorter.
Onboard O2 bottles vary depending on size but are typically 2l or 3l with "normal" rebreathers. Theoretically the 2l should be good for 6 hours and the 3l for about 10 *if filled all the way up*, but practically speaking, especially if conducting multiple dives, you get about 6 hours out of a fill on the 3l. Not going to get 10 without carrying multiple bottles.
Dil usage tends to be about the same, and you still have to carry offboard bailout.
The downside to them though is that you have to carry a lot of ancillary equipment that you don't have to bring for OC scuba, you also have a lot more complicated setup and breakdown time. The CCR is minimally configured as 3 tanks, a backplate/wing, and a rebreather. So you have all that you need for single tank scuba diving, but an extra pair of tanks/regulators, and the rebreather itself. The loop assembly requires proper drying, and a lot of extra maintenance. Not the rig I'd carry for travel. When you do get to a dive shop, you have to rely on them having pure O2 on site, preferably with a booster or those tanks you have for onboard O2 won't last nearly as long when you can only get 1800psi instead of 3000
When you roadtrip, do you have a camper/trailer/pickup truck with a bit of extra space or are you talking air travel? If you do a baby air compressor is probably a much better investment....