In summary, Omisego is aiming more on the institution, government, banks, and corporation level clients and in turn, it is changing and revolutionizing the system. People will use their product one way or another as the institutional level starts adopting this system. So yes, it is a long-term hold since it has a solid team, achieving some milestones, and already has an existing payment platform. You would not see as much advertising or anything since its main goal would be aiming at institution, government, and corporation levels. It will take a while and needs to be hold long term since it has some very ambitious goals.
I will not be writing in detail about Tenx because their white paper says pretty much everything in simpler terms while Omisego is much more complicated. I recommend you read the whitepaper for Tenx to compare their differences and uses.
Note: I am just sharing information so that everyone can learn their views. Learn and do your own research too. This is just an discussion not an investment advice.