You're absolutely right about the utility of a wheeled chair (not a wheelchair)--crutches are hideous. I broke my foot a few years ago and tooled around both at home and at work (at considerable speeds at work, propelling myself along the corridors by pushing on the walls with my arms.) It became fun, even-- (and I passed virtually everybody else in the corridors). (It's a sizable building).

If you have to use crutches, be particularly aware of potentially slippery surfaces.