Think a lot of folks say that they can work well in new buildings designed for them, and are better/best in conjunction with underfloor heating systems - but aren't the best when retro-fitted into older properties.
That's the conclusion I came to too. If gas boilers get banned I'm stuffed.
You could make it work, but you'd need to do a lot of work making the building work with it; insulation, heating system upgrade, lifting all the floors etc. Big investment.
It feels like the level of work where it would be hard to live in the house at the time so the extra disruption and expense of temporary accommodation (which there isn't really enough of already).
That's the conclusion I came to too. If gas boilers get banned I'm stuffed.