My kids got me a new bag for father's day. Of course I had showed it to my wife in case the kids asked, and they did. I had done a little research after seeing one of these in a camera store. My goal was to be able to carry a camera with a couple of lenses, or just lenses, comfortably. Where I would still be able to climb though brush, or cross a stream on rocks, etc. I have a Tenba sling bag that is just too big for this purpose. Anyway it's the Think Tank Turnstyle 10 sling bag, the middle size of 3 bags in the series. It's recently discontinued, but they are still available and the replacement Turnstyle 2 series is nearly identical and has the same sizes. The bag has just two dividers so is pretty easy to organize how you want it. Of course I haven't used it yet, but I'm looking forward to using it on nature hikes and city walks. I haven't tried it but I am sure the DA*300 or Tamron 70-200 mounted would fit, but little else would.
Here it is loaded with a Sigma 17-50 on the left, K-50 with Sigma Macro 50, F 35-70, below the 35-70 is a DA 15 wrapped in a Domke lens wrap. On the bottom (left) I added a padded divider from another bag for a little extra protection. Not visible are a couple o 49 mm filters and a 77 mm filter, batteries, remote, other misc.