Yes, something I’ve cautioned about in the past on the Notary Café forum threads.
• Non-payment if the loan doesn’t fund.
• Extended payment interval for Reverse signings.
• The funding period is quite extended for Reverse signings.
• ALWAYS query if the remuneration interval is calendar days OR business days . . .
Best Wishes 
NOTE: If the Signing Order Confirmation identifies "No payment for non-funding loans: => that’s an immediate SHOW-STOPPER for me and I return the Signing Order.
As business owners, we have out-of-pocket expenses for the services we provide and that stipulation would be unacceptable for my business stratagem.