I haven’t heard of any issues with OmniFocus 1 itself. However, the old version of the Clip-O-Tron is not compatible with Yosemite’s new Mail app, and while the latest Clip-O-Tron is compatible it requires OmniFocus 2.0.3 or later.
If you’re more specific about the issues which are holding you back from upgrading to version 2, it would make it easier for us to know exactly what you’d like to see fixed. Everyone has their own list: for example, version 2.0.3 addressed some important bugs with the compact layout mode as well as with date entry in non-English languages, which were big issues for affected people and with those fixes those customers are now able to upgrade to version 2. But I don’t know if those were the issues which you were concerned about two months ago or not.
