So, I got them in the mail today.
Tonally? Tough to say if there's a bit change here - maybe a slightly crisper attack and sustain seemed a little longer, but tough to say for sure. Call it inconclusive.
However, Floyd Upgrades markets these as primarily being an improvement in strength, and they certainly feel very well made, and should be damned near indestructable. They also look great. The real test will be how they hold up over time, but my initial thought is it's probably money well spent.
EDIT - playing with some gain now, and I do think the attack is a little clearer.
What kind of Titanium and Steel, do you know?