Omni had bottomed once or twice in his life, but he had been raised to be predominately dominant. It took his partners a lot to get him to slip into a submissive role and he wasn't particularly inclined to roll that way today. His eyes darkened even more at the challenge John spoke. He ceased trying to get the man to turn around and instead pressed him further against the desk. There was more than one way to fuck a man and there was a reason he tried to keep his desktops clear of clutter.
"Oh you may not go easy, but you will go." He said confidently. He was pretty sure he was reading the man right. One of Omni's hands went to John's shoulder to keep him pressed back even as he attacked the other side of the man's neck with licks and sucks and strong nips. His other hand went down to tease John's cock.
Slowly he lowered so he was working on nipples and then encasing John's dick in his hot mouth. While the man was suitably distracted he snaked his hands tantilizingly up and down and eventually around the theighs until he was braced behind John's knees. Getting him onto the desk would only involve standing up and a bit of lifting.