I've done exactly that with the velcro shoes! A fingernail between the shoe, and the edges of the two bits splits 'em apart with a single flick, but ya have to know it's there, ... Right!?
Isopropyl alcohol is very useful for cleaning electronics - it's great for removing flux, or other organic/oily residue. But I try to keep it as a last resort, especially where glue, paint or plastic products are involved. Alcohol is slightly acidic (although isopropyl is less corrosive than methanol by far), and you never know what surface reactions happen even if the substance is not soluble in alcohol. Certain thin polymer films, such as styrene and urethane, may become prone to cracking after alcohol cleaning. Also it's flammable and requires ventilation.
When I do use solvents, I apply it to a q-tip and daub it on, then flip the swab over and remove it.