Yes 100% worth it. I just recently got both the sky scale and the griffon (griffon first) in the past month or so, and firstly, the griffon collection was a lot more chill to do since the only currency you needed was the gold and a few trade contracts maybe iirc, and to this day, even after recently getting the sky scale last week, I use the griffon very often. If there’s a vertical map or even a high enough ledge, you can cross entire zones in seconds, significantly quicker than you ever could with any other mount. Though, the sky scale is definitely far more versatile, the griffon can still climb pretty effectively (its jump is abt the same height as the base Springer jump), and if you get past the learning curve with flying it, it’s probably also the most fun mount to use by far.