Since both @jack and @burk have been talking about their Peak Design bags, I thought I would share my experiences. I bought my 10l Sling 1-2 years ago and I use it as my mirrorless bag. It also works as my work bag when I travel. This has been my setup for the last 10 days (work, conference and vaccination). I have two cameras, four lenses, iPad 11”, batteries, memory cards, small tripod, chargers + cables (which isn’t in the picture since they are charging stuff at the moment). As you can see there is space left.
I also have a large Everyday Messenger that I bought for my DSLR stuff … which have never actually been in that bag. Instead it became my office bag which I use Everyday 🙄 to carry stuff back and forth to work.
None of them are perfect but they work very well for me.
Where do I put my DSLR??? Well, my usual setup is a D4s, large pro-body, with a two large lenses, 24-70 & 70-200 both 2.8, and a large flash with batteries etc and to be able handle that I bought a second hand backpack which fit two pro bodies, flash, these two lenses + other lenses if needed. I forgot the brand … but I know that it’s heave when fully loaded 🤪