As one who owns and VERY much plays his Eastman 632S, this happens to be an area I'm an expert in!
1. The first area I wore through (took less than 2 months) was where my right forearm rests. I wore a blemish about a 1" diameter down to the brass. In an effort to prevent any more wear, I made an attractive wrist guard from the following:
*A yard of felt-lined faux leather (felt lining is important as to not mar the finish!):
https://www.amazon.com/gp/product/B00JL ... UTF8&psc=1" target="_blank" target="_blank" target="_blank" target="_blank" target="_blank" target="_blank" target="_blank" target="_blank
*Velcro (you can get this on amazon or any craft supply store)
*8 shoe eyelets (optional - I added for look, but it also allows the wrap to "hug" the horn a little better than velcro alone YMMV based on how precise your material cut is; see below)
*Faux suede cord (I'm vegan, so opted for all synthetic - also optional)
https://www.amazon.com/gp/product/B0188 ... UTF8&psc=1" target="_blank" target="_blank" target="_blank" target="_blank" target="_blank" target="_blank" target="_blank" target="_blank
The faux leather was so plentiful, I made about 5 prototypes (all trial and error) in different sizes and cuts before settling on the "final cut". I marked where I wanted the eyelets and the place I bought them (garment district NYC) also had an eyelet press and fastened them for me. Since I don't have a sewing machine/skills, I took the velcro and the guard to a tailor for final sewing. If you want to PM me as a reminder, I can make pictures and measurements for you (you can see the guard in my avatar).
2. I wore right through the part of my first valve slide that I grab with my thumb and index/middle fingers. I'm over it... every well-played horn I have ever seen has wear there. I equate this to lacquer wear on the back of the neck on my Fender bass
The tennis racquet wraps idea seems interesting, though I personally wouldn't like look on my horn.
Check out what Matt Walters did for Rich Serpa (FYI - I modeled my wrist guard after his) :
https://d3n8a8pro7vhmx.cloudfront.net/e ... 1478898227" target="_blank" target="_blank" target="_blank" target="_blank" target="_blank" target="_blank" target="_blank" target="_blank
I learned from Matt that the ring was sourced through Miraphone (thumb ring) and they come in both silver and lacquer brass. Matt also sourced the rest of the parts (actually 2 lyre boxes) for the string assembly if you really want to go nuts. That ring would serve a as an expendable/easily retouch-able grip surface instead of wearing the 1st valve slide.
I wanted this exact setup, but it will cost over $200 (not a quote... talk to Matt/a tech yourself) due to the silver solder work involved, so I'm taking a pass for now. However, it is an attractive and elegant mod if you want to add some (more) pro flair your your already great horn!
PS - one last shout out to Matt who, again, recently did some amazing tune-up work on my horn. She plays like butter!