>>28978410not as cool as you think.
You can taste the sweat (and not in a good way) and any uncleanliness so it's not as easy as just taking off the socks and licking it.
I'll give you another example - armpits. They look cool, almost give you this urge to lick them. But once you try you know to never do it again. The AWFUL acidy taste stays on your tongue forever. Drinking a cup of water won't help it. You gotta brush your teeth and your tongue.
I wouldn't recommend footjobs either. They are painful and very rough when done in socks/pantyhose. You might want to use some lubrication also. And you have to be aware to not get kicked in the balls with her heels on accident - which happens more often than you'd like to imagine.
Footjobs are these kind of things that are more for your brain than the pleasure of your dick. Yes, they are extremely hot, but even a simple handjob is more pleasurable than a footjob.
What I recommend is grabbing her leg while you're fucking and try to have her feet close to your face, or maybe kiss her feet. But that's it. Anything more is not worth the trouble IMO. So as with everything - the porn makes it much more attractive than it really is. Hope my answer helped.