My feelings are mixed whether these are entirely minimal. The fore-sole is thin, but the heal is a bit raised. Overall they score points with me regarding toe-box... widest ever and the most appropriately shaped I have found so far. They score points for comfort with <almost> no support. The insole is a bit raised in the heal but is removable. At this point, if you are looking for a shoe to wear to work (guys only, sorry ladies) this is a viable option if you can't find the Terra Plana Dharma's (the apparent standard choice as a work shoe for barefooters)
You can find these at REI if you want to try them on. I couldn't bring myself to order the Dharmas without trying them on.
Full text first impression is here. http://deviantrunner.wordpress.com/2011/03/01/work-shoe-for-barefooters/
Steve
I accidentally stumbled across the Patagonia Pau, also at REI. I liked them...a LOT. But they are $130, so I held off for now.
The Olulu, Loulu and Pau all appear to share the same sole. I think they are also built on the same last, but this is based on viewing pictures of the Olulu and Loulu...I have only seen and tried on the Pau.
Forefoot - I need a very big toe box (feet not wide, but thick from barefooting, and very flat, so they actually angle out a little bit, honestly). The insole is pretty thick, but removable. With the insole removed, I found the Pau to be very roomy, pretty close to ideal.
Sole (without insole) - The sole is quite thin...maybe not super-minimal, but close. As deviantrunner stated there is a slight elevation in the heel. The sole is a relatively firm rubber. The sole has a honeycomb texture, not necessary, but not intrusive. My only real concern, there is a rectangular "shank" in the heel. Its a piece of some harder material, I assume to limit motion and create "support". Clearly I would prefer it not be there, but since the sole is so thin, the degree that it limits motions is inconsequential. However, I worry that this rectancular piece, which is on the surface of the footbed, will cause irritation.
Bottom Line: This is by FAR the best looking, dressier minimal shoe that I have come across. In my limited in-store walking it was very comfortable. If the rectangular heel-shank is not problematic, I think this shoe would be very comfortable to walk in (I don't run).
Not perfect but looks like the best dress shoe I have ever found in 23 years of looking. So happy the minimal shoe movement is gaining traction.