@Timothy J. Who are you speaking with as your buyer's (the one you will assign the contract to)? Are you dealing with agents, investors or regular retail buyers?
As @Roland Paicely mentioned, I doubt an investor would turn down a deal or frown on it just becuase it's coming from a wholesaler (unless the numbers don't work).
I've come across real estate agents that aren't familiar with wholesaling. When they ask if I am the owner and I tell them I have the property under contract they usually ask what that means. I take a minute to explain to them what that means and then they either keep talking to me or they say they aren't interested. I've even had real estate agents contact me because they wanted to become my "seller agent". When I explain to them that i'm wholesaling the property, they understand.
Now I can see an average person having an issue because it might be an extra layer that they just don't understand and unlike an agent that has real estate knowledge, they have none so explaining in a minute or less may be hard.