After playing with these for the last two years, here are my thoughts:

Suitable playing surface: work great for hard ground, dry soccer fields, as well as turf(artificial) fields. Don't work so great for wet, soggy, or muddy fields. The studs are not short, but there is a reason why soft ground cleats have studs that long.

Touch: The leather is grippy when properly taken care of, and there is very little in the way of padding. This makes the cleat almost feel like a fitted leather sock. It really puts you in touch with the game, and does not isolate your foot like a lot of other heavily padded cleats do.

Durability: Not the most durable cleats out there, but they have held up for the the last two years. You have to be careful to not drag your toe on shots, because that is kind of a weak spot. However, being leather, once a tear develops, it really does not propagate very much. Somebody put a 2" long slice in them with their cleats, and the slice has not gotten bigger over 1 year. Plastics and synthetics tear easier, especially in high stress areas. Overall, I think the durability with regular play is about 3 or 4 years.

Protection: Having very little padding, when you get stepped on, you really feel it. The heel is reinforced obviously. Perhaps not the best for defenders because of this.

Fit and size: I wear size 11 Adidas Samba indoor shoes that fit just right. My Copa Mundials are size 9.5. The initial fit was intentionally very snug (not finger-scrunching-snug, but without ANY space front or back of the foot). I broke them in by loosely tying them on, taking a warm/hot shower in them, and wearing them until they dried. Over the course of about 5 games, the fit became perfect. If you are buying them online, DEFINITELY go to try them out at a store first (most sports stores carry them), and get the fit right. Because if I had gotten a size 10, they would be too loose now, and 9 would have been too tight. Sizing is really critical here.

Care: Leather is strongest when it is clean and hydrated, and weakest when it is dry and dirty. After a game, clean off all the soil with a brush, and wipe them clean. Every month or so, apply mink oil or leather conditioner. Buff it in, let it dry overnight, and clean any excess the next day. Also, do not dry them on a radiator.

Price: I think that paying $100 for cleats of this quality every 3-4 years is an absolute bargain. When properly taken care of, they will last a very long time. So, this works out to just $25 per year - a very reasonable price I think.