Yes - I have.
It's called a 'G5RV'. The 102-foot version.
Mine employs a current balun at the feedline transition point and exhibits a VSWR of under 2:1 up to around 14.300. It also nets a lot of unsolicited commentary regarding signal strength. Works good on 12M, and about as well on 75 and 40 as the dipoles I have up for those bands.
The other bands? Forget it. Might as well be using a dummy load.
One day I'm going to install an array of multiband (160-30M) slopers for grins and see how that works out for lower HF usage.