Doing my best to be concise and not open an eternal debate: I love my decocker cz's for range and competition. Love my 1911s for the same purposes. However I carry glocks, and practice alot with them for self defense purposes. While i can train most anyone to operate most any weapon system, Glock is my default suggestion to any newcomer as the manual of arms is as simple as it gets.
One thing I would offer: if you are worried about AD while holstering, recall that striker guns usually have a trigger face safety, whereas DA guns do not. Also remember that holstering is almost never something you must do in a hurry, while drawing and shooting almost always will need to be fast, instinctive, and intuitive.
Lastly, in evaluating striker designs, understand there are several systems on the market. GLOCK is somewhat unique in being a true DAO design. The striker is not "cocked" until the trigger is compressed. There is no stored energy in the striker spring waiting to "go off" if dropped etc. Others, springfield for example, are partial precock designs aimed at improving trigger pull. These systems are closer to a SAO trigger, albeit with heavier pull. All have multiple safeties built in such as a striker block, trigger blade safety, etc but I regard the glock design as being inherently safer than those which involve keeping the striker partially cocked between shots. If you want to fear something I think you should fear forgetting to decock before holstering, forgetting to apply the safety if employing cocked and locked carry, forgetting to flick a safety off during the draw, or failing to master the da/sa transition in a high stress situation. I see no reason to be uncomfortable with strikers even if we all know how much sweeter a da/sa hammer gun can be!
