I've been doing this for several years now with great success. When I first tried my hand at hydro, even though I've had decades of outdoor and indoor dirt grows, I kept running into problems which led me to believe that hydro systems are more prone to problems, and most of which can affect your entire grow, not just individual plants.
That's when I switched to the Hempy Bucket and I never looked back - it has to be the simplest and idiot-proof method out there, imo. I liked the fact that quick drainage made adjusting nutes easy with faster reaction time, not to mention much quicker flushing times and less water use than soil. That said, I did notice that when plants got larger, especially if you're pushing the boundary of the bucket's size, that if you're not careful they can dry out too quickly causing unnecessary stress and damage to the root system. In my case this happens more often when I want to go away for a few days, seemed anywhere near the latter stages, more than 2-3 days could spell trouble.
So with my xp with dirt, I decided to start adding a percentage of soil to my Hempy system in order to give them the ability to hold water/nutes for a longer time and make it more forgiving. What I found was that it worked quite well, and so each grow I added a little more, found a point where it was too much, and so settled on about 35-40% soil added to the coco/perlite mix as working best (Edit - should add that that's more by weight than volume). Btw I also use lava rock for the res, the cheap red stuff you can find in the garden section of most builders supplies.
Another benefit is that you can add some nice organic ingredients in the soil, giving the plants access to a lot of micro nutrients not available with coco/perlite and a much better environment for beneficial bacteria and mycorrhizae to thrive in, something Hempy systems aren't great at imo. It does have the disadvantage of making flushing more work and needs lots more water to flush fully, but it's a minor drawback considering the benefits. I now find I can easily leave my girls untended for up to 3 days, even near harvest, without any serious issues. I think of it as a hybrid system and it certainly works for me anyway ;?)