IMO, Ironbags makes the best leather bags out there, bar none. They're top quality and made for you personnally. There's a ton of options and styles and their brackets are design for your exact bike.They have throw overs too. I have a pair of their Iron Max and I'm more than satified. As far as "easily removeable"-that's up to you to decide. They have a great web site
www.ironbags.com and are good people to deal with. They're not cheap, but they're not made in China either.