I've always used my regular saddle to hit the trails. That's what I'm used to and it's super comfy. Made to fit me and my horses so that's what I used.
At some point in a few years once my horses are well broke to ride and safe for anyone to get one I would like to get a western saddle for my mom. I know that's all she will be comfortable riding in, otherwise my every day english saddle is all I had been using :)