Graham's suggestion is a good one - any equine supplier will have the soap & oil. I've never been involved with horses, but it's a well-trodden path,or even bridleway....(HoHoHo), so it will work well.
My repair kit is for 'indoor' and car interior use. There's no doubt that it will restore the colour, and the finishing 'lacquer' is amazing. But I don't imagine it repels water in an outdoors environment.
I'm a big fan of Dubbin. (oo-er missus......
)
It doesn't polish, but it does waterproof, and now you've raised the wet luggage strap issue, I'll have to get the black Dubbin out and get mine sorted. Here's a link.....
http://www.ukequine.co.uk/index.php?act=viewProd&productId=360
