Five Ten has to make money, so like most MFGs they tweak styles and change names to freshen up the brand and maintain market appeal. The replacement shoe will probably be fine, hopefully they will slim it up a bit and stiffen the midsole. The Didier is a nice shoe, more expensive, but it offers some nice features, esp for folks who do trail work. Here’s a sale price ($75) at BC.COM, only in Men’s sz 9: http://www.backcountry.com/five-ten-diddie-schneider-shoes
BTW, if you have not had a chance to look at some of the other shoe brands, consider Teva The Links, I have had great durability and performance from my pair. If you are wanting to “do your own thing”, take a look at the shoes I had made using a clipless shoe as a base, Pearl Izumi X Alp with Vibram sole: Customized Uni Shoes
It’s the best shoe I have ridden for XC and muni, great hike and ride shoe, no laces, lightweight, great grip, breathable, and fast drying. It was expensive to build ($175), but well worth it 