Acoustic IRs have to be designed for the source as well as the target. That is, the IR is essentially the difference between the sound source, and the desired sound target. So an acoustic IR for a piezo pickup in an acoustic guitar will be a very different IR than one for the bridge pickup on an electric guitar for the exact same target guitar model. Creating these different IRs isn't the problem. There are really two problems. The first is that the exact sound source we're putting into the IRs isn't the same as what was used to produce it. Our guitars are different, our pickups are different, strings are different, etc. The second is that an IR can't produce sounds, it can only transform or convolve what it is provided as an input into an output. Electric guitar pickups just don't produce a lot of high frequencies. So they don't provide as much for the IR to work with. Acoustic IRs for electric guitars tend to over-hype that 4KHz frequencies because that's all they have to work with. This sound somewhat artificial and brittle to me.
But an IR designed for a piezo pickup in an acoustic guitar in Helix does work really well. I use one for my acoustic guitar and mandolin for all acoustic gigs. These do a great job reducing the piezo quack, and warming the tone.