It can also be quite hard to do. If a woman is concentrating on staring in your eyes then she is not concentrating on giving you the best oral possible. Whilst I too like eye contact I sometimes just forget about it as I get carried away with what I am doing.
In RO if the guy is any good then he has no chance of ye contact at all, as I can only do that when I am not enjoying what he is doing, as normally my eyes are either closed in pleasure or my head is thrown back or I am laying with my nipples.
Eye contact is nice but should be natural and if you say you expect it then she will put all her efforts into that and other things wont be so great for you as she will be so busy concentrating on eye contact that either oral or whatever else will suffer becuase of it. Plus it also means there is only one position she can give you oral in i.e knelt between your legs, which a lot of guys dont want as they want to be able to reach bits of her