Does that sound like what you want?
Yes! Initially I setup my router to route all traffic through there but without a decent server setup this seems like too much of a constrain on my mobile performance. It works though: no ads when connected to it. But it is sloooooowww.
I’ve always used AdAway on all of my (Android) devices but the company I (am going to) work for does not allow rooted devices to be used on the premises. So I wanted to swap to remotely calling my PiHole as the primary DNS server to still block all tracking, malware and (most) ads.
But, after reading up on this project the past weeks and watching this video I wholeheartedly agree with not simply forwarding port 53 and making my Pi visible to the public. So I guess a VPN it is.