As an oboe (and bassoon) doubler for many years, in my opinion the double reed emboucher is the least of the problems in playing these instruments. Reed making and adjusting for pitch, timber and response are far more critical, not to mention technical considerations of fingering. After all, the ultimate goal of any doubler should be to play at a level technically and tonally that the listener will be unable to detect which is your principal instrument. To handicap yourself by using a single reed setup on either of these instruments is to set yourself up for failure at the outset, and make what should be your goal in playing these instrument harder, or actually more or less impossible to attain. There are truly no shortcuts in becoming a truly skilled woodwind doubler! It takes hard work and good teachers, and dedication. Just my two cents.