I don't think much of gender roles at all, since of all the things we could group people into doing things with roles...you're literally putting half the population in one set of roles, and the other half in another set of roles and by maintaining that outlook on what roles fit what gender they can't all be right.
Instead roles should be defined on personality characteristics, as well as physical and mental traits. When you look at classical gender roles, masculinity in most cultures is associated with dominant roles while femininity is tied to non-dominant roles. Really gender should be taken out of the equation because not all men are going to be a dominant type of personaility or have the traits requried to match. Same for women, not all are going to be a non-dominant personality and so forth.
Let me put it another way.
Here are the classical roles I fill as a man (this is far from an all-inclusive list)
-Head of household
-Handyman
-Primary decision maker
Here are the non-classical roles I fill as a man (this is far from an all-inclusive list)
-cooking
-cleaning of kitchen and bathrooms
-grocery shopping
-taxi for the kid (soon to be kids)
Here are some roles that would be more associated with a man, but my wife takes care of.
-finances (I really don't feel like touching them and she is an accountant...win for all)
-coordinates all work to be done on house(s), maintains list of outside contractors
-primary contact for tenants (we are landlords, but I'm pretty much one in name only)
.....
.....
I could go on and on, but really it all depends on the person, their personality traits, their capabilities, and if in a relationship or relationships it depends on who is willing to do what and what needs to be done. There are things I just don't do and that's her job, and we hashed all this out a long time ago. I have the dominant personality, but I'm not omnipotent and I don't try to be which is why she handles the finances and the stuff needed around the house. I love cooking so I do it often (it also is most convenient since I'm home first). She is an accountant and she is quite handy with number crunching and really efficient (something I would normally do, but I hate doing it and she is much faster). She notices things I don't with financial statements and she manages quite a large return on our taxes. Though when it comes to decision making, I usually have the final say on what is going to be done. Though together we weigh out all the options and there are times where I go against my better judgement because she is so headstrong and confident about something (usuallly because for that particular situation and decision, she knows better).
It's all about give and take. Give it your all, take what is yours.
I do like idea of chilvary though. I always walk on the sidewalk with myself between her and the road. I always hold open the door (unless I'm carrying our son), I kill the spiders and such she hates (but the opposite to that is that she shoos away bees for me....I absolutely [censored] hate bees).