The flat bar is about 692 mm The Trail Sweeper is about 775 mm

Yeah, those are on my list, overall feedback seems pretty positive across the interwebs. What bar width are you running? I feel like I would need to narrow up to make those comfortable.   Right, now I've got a pretty standard Truvativ Bar, but eventually I'd like to try out some Alt Bars. I'll probably avoid drop bars because of the added expense/ complexity of lever pull and groupsets that I'm not interested in but other ones like what you've mentioned or the Surley Corner Bar are interesting.  Here's a few resources I've been reading on it: https://bikepacking.com/index/comfort-mtb-handlebars/ https://bikepacking.com/gear/adding-alt-hand-positions-to-flat-bars/

Looks nice. On both of my rigid bikes, I have Ergon grips with the bar ends.  One bike has a wide flat/straight bar.  The other has an Origin 8 Trail Sweeper bar (essentially flat with some sweep).  I ride both bikes everywhere and think that I have a slight preference for the Trail Sweeper base with the grips. I am currently researching some Alt bars and may be settling in on a Sims Works Ramble Bar, but have not pulled the trigger.

Got the rear done: 27.5" wheel with 650bx48 tire and mechanical disc brake caliper installed.  Next is swapping out the fork. I could keep the current one as it's serviceable, fits the 650b just fine and and has disc brake tabs but it's got coil spring that I'm too big for and I happen to have a decent 100mm airfork with remote lockout.  I'm also starting to test different bar end thingys for additional hand positions. Any advice would be appreciated.