I use Saddle Soap to clean and Neatsfoot oil to condition (VERY VERY LIGHT APPLICATION), then buff it out with a microfiber cloth. I've done this twice to my SLW in 2 years and it still looks new. Other than that, I just keep a microfiber cloth in my case and wipe down the entire cue, shaft, butt and especially wrap, every time I put it away. Just keep it reasonable clean by wiping it after each use and there isn't much needed maintenance.
edit here... when I was in South Padre, a player traded a Titlist Conversion cue in that Jerico had done back in 1990. It had a stacked leather wrap on it (yeah, I know, according to most, that was before stacked leather wraps existed, right... NOT!) and it was still in EXCELLENT condition. Jerry was happy to get the cue back after 16 years. I shot a few balls with it and tried to buy it off of him, but he wanted to keep it. Guess it was unusual to get a cue back that you did a conversion on after 16 years... sweet hitting little ride with an old growth shaft on it that was still perfectly straight. The player had used it very little, but still, stack leather lasting 16 years is quite a testimony to the durability of a good SLW.
Later,
Bob