Mike,
The weight of the beavertail forend is a lot more than the splinter. If the forend lug or the locking mechanisim is under enginered(engineered for a splinter), the forend is likely to part company with the barrels. Stories attesting to these events are posted about twice a year. I would opt for the splinter. You're never going to shoot the gun to the point that you'd require a beavertail. We hope. BTW if the forend fails extraction and ejection would be a problem. Not to mention the problem of the gun coming apart upon opening.
Someome else pointed out double triggers, and I agree. But, I've not read anything about ejectors vs. extractors. The ideal gun would have both with a selector switch. Alas, not many are designed this way. If I had to choose, I'd choose ejectors. They should be faster for reloads. They're more complex. But, if they fail, they should become extractors.
Phil
