I'm not sure my response will be helpful, but I've been looking into life insurance too and hope to hear from others who know anything.
I've heard that depending on the insurance, sometimes after 2 years, it will still pay out, even if you CTB. If you are like me and want to CTB in the near future, this isn't helpful.
Some other info I read: health issues such as diabetes, kidney failure, etc... can make it difficult to get life insurance. If you have been hospitalized for depression, you can also be denied. Lifestyle, weight, smoking, etc... can affect how much your premiums are. You'll need to have bloodwork done when you apply.
I had life insurance through work, but as soon as I went on medical leave for depression, etc.. they canceled my policy.