I'm watching ARC but will probably wait to see what kind of dump they have at launch and buy during that time. The reasons I'm a little wary are: 1. Theteam has no blockchain experience which makes it tough (although not impossible). 2. The company holds more coins than the traders so they control it (centralized). 3. The last piece is that they are trying to play catch up to other platforms (Eth, Neo, etc).
The IBM link is a big thing though and I will watch and probably buy some, just not ICO.
RE: ArcBlock ICO Review - 10 Reasons Why The World’s First Blockchain Ecosystem ArcBlock Is Promising