April,

Not to overwhelm you with options but here are some photos of one further choice for a "dirt drop" style bar. Pictured is the On-One Midge bar. It is available to fit a stem with either a 25.4 or 31.8mm bar clamp. If you have a standard 26mm quill road stem you can order shims to make the 25.4 bars work. They are similar in shape to the Soma Junebug that you mentioned. The brake levers are angled more than the Woodchipper or WTB but not so much as the Gary. Bottom section is shorter than Woodchipper. The hoods feel comfortable at that angle. Your hands just rest more on the outside corners of the hoods. My bike is still under re-construction, I haven't ridden the new bars on the road yet.

I've been using conventional drop bars on touring bikes for the past 40 years but as you have pointed out, the dirt drops seem to put everything right where you want them. The angle of the bottom section matches the angle of your wrists when you let them hang limp. Combine that with a shallow drop set up high, it makes the drop position more useable and brakes easier to reach for extended descents. Not sure if I'll still need the cross top levers above but I'm going to continue with their installation.

Yes, you can adapt your threaded fork tube to "one 'o them new fangled threadless" styles. That's a "Dimension" adapter pictured on my threaded fork from Harris Cyclery. I chose it because it adds over 3" of rise as well. Extra hardware but easier to change stems if you need to tweak the fit.