I've been punting for over 10 years and, until this year, only booked incalls. I can count the number of underwhelming experiences on one hand (and I've lost count of the number of punts - probably close to 100).
Since September, I've only done outcalls via reverse booking on AW and have found it to be a mixed bag to say the least. Aside from two fantastic bookings, the rest have been pretty naff, with reasons ranging from ladies talking my ear off before getting down to business, being far too mechanical or using tactics to rush the sex or leave well before the booking is supposed to finish. All SPs I've booked have been well reviewed on AW, so although your mileage will always vary, from a price vs performance aspect it's a waste of money.
I'm interested to hear how other punters have fared with outcalls via RB. For me, I'm switching back to incalls. Even when the SP is fairly mechanical, you tend to get your money's worth with time spent and the expected amount of sexual activity.