With 60 Leather and 60 Cloth you're tier 31 on most Seer's gear. At 75 Cloth and 60 Leather you'll be tier 51 on most Baron's/Noct gear. These can be a pretty good profit if you are watching your market.

Cloth uses Leather more than almost any other sub. At the higher levels Gold becomes a bigger deal. With 45 Smithing and 60 Cloth you're also tier 31 on Kaginawa.

Just so you know... Leather sucks ass. If you're looking for something to save money while you put Cloth on hold, Leather is probably not it. However, if you have ample time and will to farm, you can make Leather into quite a profit to skill up. I did a good deal of my leather while farming and turned a decent profit in some level spreads.

Alchemy is a good cheap craft to take to 60 (or beyond) though the sub isn't used very often. If you find Cloth to be too pricey for you, Alchemy and Cooking can make for pretty decent choices. I took both to 60 at a profit (long ago though).

Perhaps later I'll put down some guide material.