It certainly would be funky, but I'm thinking not in a good way.
Compare the principle of the new Primacoustic
Recoil Stabilizer for placing monitors on. Compared to the Auralex [url=http://www.auralex.com/sound_isolation_mopad/sound_isolation_mopad.asp]MoPad[/u] which decouples speakers from the surface they are on by putting a layer of foam between, the Recoil Stabilizer puts a steel plate with some mass on top of the foam to give the monitor a more stable place to project off of. The write-ups I've seen of the recoil stabilizer say that the foam decoupling does not really give as anchored of a zero position for bass excursions from the woofers.
So take that principle to head-mounting the Shu--if you want your bass frequencies to track tightly to the actual transients, you don't want the mic flopping around. You'd rather have it firmly fixed so the mic's diaphragm is the only thing moving with the soundwaves. A good shockmount shouldn't leave a mic flopping around, but should hold it firmly in one place.
I'm all for DIY, but put the effort into building a
good shock mount or figuring out what material to use to isolate the base of your kick mic stand. (Foam and gum erasers would be the first two materials I would try.)
Bear