I've got a Visionary Slate Blue Gargoyle, a similar piece to both of these, and it will outhook a few of my older, weaker reactives. A big misnomer is that urethane automatically equals "weak." It's better said that urethane gives you a different look, and there are times when a reactive ball struggles to produce a similar look without either getting uncontrollable up front or burning up. Same comments go for the Naturals/Grenades/Liberators of the world.
I think if you're building a big arsenal, these balls definitely have value. They are somewhat niche products but it's nice to see someone with a PBA license finally made a pearl urethane, so we can see it on TV next year.
Jess