I get it. That said, I'm very comfortable skiing the in bounds trees by myself and do so at SB on a regular basis.If your not comfortable skiing trees alone..don't.
I've never thought its a good idea..
However, there are three differences in my mind. First is that while I may not be able to see the marked trail from where I am in the glades, I inherently know that there is a trail to my left or right or both. The second part is that I also know that I will eventually reach a lift. The last thing is that while there are some pretty nice glades in bounds, there is nothing the size of Slidebrook where you in theory could end up lost. Even if I tried, it would be pretty hard for me to get lost in Semi-Tough or Eden.