I definitely think the IOTA concept is a great concept and their technical solution for real life problems is very interesting. I think we can all agree that IOTA essentially seems like it is a great blockchain. (Edit: 
But here's my take on it. IOTA will not last because it will not get collectively adopted. So for me (I'm not into short trading), holding IOTA for the long term is out of the picture. But what about short term? Well, because it's very new and seems to have a great use case for millions of devices of course IOTA is very interesting for short traders and I expect several pumps and dumps along the way that short traders can profit from. Again, I think that IOTA will not get collectively adopted and therefore last.
Why? Because I don't think that big companies like Apple, Microsoft, Samsung, Sony, LG, Bosch, Siemens, etc, etc, that make devices that connect to the internet for some reason, will jump on the IOTA train. Why? Because each of all those companies will, in my opinion, surely try to build their own blockchain/tangle/system first. Most companies on that level don't really want to adopt a standard that they haven't created themselves unless there's not a good way around it.
The world needs standards, but all those companies do not really want them. Not having 1 standard for specific things in the end drives the economy. They want to create something themselves (and perhaps one or two other 'partners' to form an alliance) that is supposed to be so good that others will have to adopt it as the new standard. Thus making more money from it.
So IOTA can definitely still be a nice short term investment but I don't see it being picked up collectively by all the big players in the upcoming years. I'm most certainly not against it and IOTA seems that good that I hope they all will just for testing purposes to start with, but best case scenario will be a few small companies who can't invest in research and development of their own blockchain/tangle/system trying IOTA while all the the big players will come up with a IOTA concept of their own and basically market that as the new standard.
Interested to read all your views on IOTA so feel free to comment down below!