No, plenty of people probably do this. However a well glued cross tube is going to be hard to get off, and Belgian tape will make this even more difficult. With either method it's going to take some skill and patience to get the tubular off while keeping it in a condition to be reused/reglued for the following season, if that's what you're suggesting. At the very least you'd probably have to get new basetape, which can be done fairly inexpensively via tirealert. What wheels are you gluing up?
Personally my cross wheels are just that, cross wheels. On the road I ride clinchers and a powertap hub and my cross wheels are just white industries hubs to hed belgium rims. If I had a set of 303s or ENVEs for cross I could see how someone would want to get more use out of them.