SÄKER modular harness, and similar brands.

I'm about to start a man trailing class with my dog and need a Y harness for that. there's a few different brands that I'm looking at but I'm really intrigued by the SÄKER harness. I'm not super concerned about the crash test rating because it's not what it will be used for, what I'm more interested in are the modular attachments. has anyone ever used the rescue sling or traction attachments? I do a lot of hiking and being able to carry my dog out is always a concern for me so I would like the option to be able to just add something to his existing harness. I've seen plenty of molle harnesses, I hate how dirty the velcro can get taking things on and off. I've also never seen a harness that had so many different types of attachments. If you know of any other great harness brands I am open to suggestion!