Hybrid suspension

Hey folks. I've been researching where to send my suspension to this fall after this riding season. It will need to have service anyways so I figured I'd get it revalved while I'm at it. I know it's a long way off but I figure id get the conversation started and get some opinions. I was recently reading (and intrigued) by the thought of this hybrid like suspension that I've read PC and Pro-Action do. It's spring and air. It's a conversion for air forks (which my bike has WP AER). Anyways, just reaching out if anyone has or tried this setup and their thoughts over strict air or spring. Thanks!