I doubt the average officer even knows that a MB must be registered; I imagine it's so obscure that it doesn't come up much at "the Academy". If it becomes a problem, they could start informing the officers there, so don't do nothing stupid!
There are many paved trails in my neighborhood with stripes that look like mini streets, but I, too, usually just use the road and bike lanes. Some major streets have the road, bike lane, sidewalk, and a parallel trail all in the same stretch. ABQ is a quirky amalgamation of "bike-friendly' and 'bike-deadly'.