Well, sort of. :3 JUNOS runs on everything (new-ish) that Juniper makes, including some devices that are really very affordable, especially if you haunt eBay for testing or home-lab equipment. The command structure is very (and fundamentally) different from Cisco IOS (and the thousand derivatives - Aruba, Arista, etc.), but I find that I rather like it better. :3 

I get to play with a lot of slightly exotic equipment at work, thanks to the nature of my company. There's a couple sides to that - [i]mostly[/i] I do things that aren't network engineering, but I find that you can never know too much - and all of that makes me better at what I "normally" do (In addition to those times I [i]am[/i] called on to do engineering and architecture work). JUNOS has been on my "list of things to get familiar with" for a while, and now I am! Enough to get myself into trouble, anyway. [laughs] 

Now onto some more esoterica. I really need to do some more experiments with the F5 virtual machine I have sitting around...:3