Practiced with one of my F 3.0 Tours strung with Babolat Xcel 17 black. The Xcel provided a much softer feel, consistent with what you would expect from a multi. Very soft and powerful. The Silk, by comparison, felt much stiffer, similar to regular synthetic gut, but a tad softer.
Surprisingly, I think I prefer the Silk in this frame. The stringbed feels very uniform and offers a very quick response. I'm also able to get a bit more control on my groundstrokes with Silk.
That said, I probably wouldn't pay full price for Silk.