The problem with these backdoor listings is that current shareholders get shafted to oblivion by restructures etc. If there is going to be a back-door listing I'd personally wait for some signs of evidence of this.
What I really don't understand is why POH didn't have the foresight to see the potential of IAH more clearly and roll it into POH umbrella. IAH could have then been spun out as a new entity at a later stage to the benefit of shareholders. I feel like POH shareholders have been a little shafted by all this.