Beenman P17 holster for a lazy guy

Hiya, I am going to ask for a suggestion and it will sound sooooo stupid, but I am ignorant on air guns and accessories.

I'm purchasing a Beeman 17. And I want to have a quick-draw holster while wearing very loose pajamas..... I work 100% from home on a laptop, and I haven't worn a belt in years and always wearing pajamas. And I would like to work while outside in the back yard and shoot at stuff. Would anyone know what kind of holster works well for this purpose?

p.s. I also have a Kimber Custom TLE II 1911 (firearm, not air gun), and it would be nice if the holster fits that too.