As many have already echoed, you can only have 1 Active at a time.

So my guess?

It's a glitch... Maybe there's a Loadout Glitch or something?

Load Out 1 for example Cloaks, you quickly switch to Load Out 2 and Blurr?

It would be nice if you could in a sense multi-class though. A Cloak/Overcharger seems nice...

Might have to investigate this...