I haven’t, no. Force carbonation is so much easier, and at homebrewer scales the cost of the CO2 is really not important. It’d be a fun technical challenge, though.
If you do choose to pursue it, you will 100% need the Tilt’s SG feature to determine approximately when to transfer to the keg, and you will also want a trustworthy Spunding valve that fits your kegs. Leaving off either of those leads, respectively, to poor beer aroma (as excess gas from too much fermentation vents and scrubs volatile aromatics from solution), and a dangerous overpressure event that can have explosively catastrophic results.