I also think this could be a big problem. Some others seem to be: the tire bead and rim wall need to be really strong to get a good seal and prevent rim blow-out. The Stans used in the conversion needs to be reapplied every few months (Arizona) to a year (Northern states) depending on the heat of your area, if the tire hasn’t worn out.
The benefits seem to be less weight reduced thorn and pinch flats, and ability to run lower air pressure. But the need to keep the pressure up to prevent “burps” may cancel that last one out, unless you never land sideways.
a guy i rode with had it on his mod bike. It burped every time he landed a little bit sideways. Needless to say he kept it for about 2 rides. its realy not worth the 5grams you save. but if you wana try it go for it
