Well it really depense on how lazy a person is.
If they see hard to report names (which do stand out) they might straight away think botter, maybe watch you a bit (if not report you straight away). Some people will take the time just to try and get you banned/rolled back.
On the other hand people may screw up trying too report you, or just not be bothered to do so.
Personnally i try to keep to a name that is a few jumbled up letters that is hard to read which means people will need to read over your name a few times before reporting. But not one of those names that just stand out infront of everyones. So too answer your question, i don't think the hard to report names reduce ban rates.