The advantage loyalists have is that theirs, though it can't hop back up and around, only costs 1/3 as much. I'd gladly use theirs, if it meant that I got that much security to deliver things just where I want on T1, minimal scatter-mishaps, etc. CSM... don't quite get that inexpensive delivery system they crave so badly.
One thing I would do to minimize points invested is take Havocs, rather than Chosen, since they can grab 4 meltas just as easily, but are a bit less expensive, there.
I'll be honest--I haven't played with the Dreadclaw. I'm having trouble, though, convincing myself that my my money wouldn't be better spent getting a Hellblade, or something, though, if I were to make a Forge World order...
What sphinx of plascrete and adamantium bashed open their skulls and ate up their brains and imagination? Imperator! Imperator!