My personal opinion (and I live in dallas, and yes I log my Dorba miles) is that MUPs are useless for commuting. Very few houses exist right on them and even fewer businesses do.

Its also the Type of MUP that counts.

If my commute could take me conveniently on White Rock Creek trail, I'd use it - very few intersections, almost completely removed from car traffic.

However, The every now and then that I commute down Meandering way, I'd much rater ride on the road than on the path. Cars don't notice people at commuting times crossing the sidestreets on the path.