No doubt about it, leather looks much better, however, once it gets wet its a bitch to dry out.
Leather takes time to break in, the higher quality of leather, the longer it takes.
You can go for leather and wear an oversuit in wet weather but you still end up wet from condensation.
You need leathers and synthetic clothes, go fot the synthetic first, get the leathers later.
I guess it does depend upon your climate, leathers do not keep you warm, in fact you tend to end up cold, well at least in the UK you do.
Leather jeans can be something of a pain, they offer good protection but they are not really something you can put on conveniently.
If you need to do quick changes from bike clothes to work clothing, then Aerostich suits are probably the best thing out there.