My experience with acoustic guitar in live gigs is the typical hard way of learning process.
I tried all IR things. When discovered it (back in 2018), it was sooo great at home. I just thought it was the absolute solution. Not only for getting a "mic" tone for live use, but also for recording at home without external noises or complicated mic installations.
But then I went to the first gig with it (at that time, I had a Logidy EPSi IR loader, which was great, very low latency and very long IRs)... and there were no way of making it sound good. It was hollow, distant, icepeaky... horrible. The tech guy was like "mate, turn that off!!".
Then I started to load the IRs in the Amplifire12 I ordered as my main rig. Same result.
People said it could be a good idea to "blend just a little IR". Got a Helix, which allowed me to blend IRs, unlike the AA12. Loaded my IRs and blended them to avoid the full IR hollowish hell. The result was bad, or meh at best.
I also tried making my own IRs (Cuki has a fantastic open source tool for that). Again, at home it was awesome. But live wasn´t making it for me. At least, not in a 6-piece band.
Took my experiences to fora (yeah, fora... whats up?), and more or less everyone was having a similar journey. They all agree that you need to blend just a little of IR to be good live. ToneDexter, Baggs VoicePrint, Nux OptimaAir and the likes... allow to create your own guitar Irs too. But out there I see people coming back to reality and more or less being aware that they´re not miraculous either.
And, for me, the end of the journey is coming back to a preamp/DI. Yeah, that piezo quack can get tamed a little with EQ and compression, and at the end, that kind of sound is the one We are used to hear in concerts. Once you realize it´s not that bad, you end up enjoying it. It´s far less hassle, far easier to use, and it can sound perfectly fine.
Furthermore, and just as an example: a couple weeks ago, I had the enormous fortune to be in a very small venue, watching a monster flamenco guitarist (a big name in the style, which tours all over the world). His tech guy is a friend of mine who told me he installed the night before a Fishman Prefyx in the guitar he used in this gig. It seems they always have problems with mics in big venues. You know, feedback and whatnot. For this gig, he still used the DPA 4099 mic, with piezo blended just a bit. But he was so pleased that he was eager to try it in big stages with more piezo blend.