Not a "Guy" butt...
One Goes In The Pussy And One Goes In The Ass Soooooo... I'm ASSumming There Is Definitely Some Comparison Going On There...
Personally, I will never do greek. That shit is just gross to me. Exit Only. If I get an appointment request and the gent sends a list of activities he enjoys and anything includes his asshole, I pass. There is nothing sexy about sucking your dick and staring at a gaping hole the depth of Mammoth Cave when licking your balls because you've been pegged for years, etc. Just. No.
That is all...
Let us know how it works out for you OP!
Have a great day and Happy Hobbying!