Guys, what Shawn Dodson said IS a major factor. Whether the grip safety locking the slide is truly an impediment to one-handed operation or not, if enough folks perceive it to be an issue, then it IS a big deal when selecting service pistols.
Another factor is armorer support. Glock armorers are everywhere. I don't know about S&W armorers, but S&W itself is known for quick attention to LE pistols sent in for service. I work a second job at an FFL, and seem to remember reading in a firearms industry publication several years ago that one thing hurting XD LE sales was indeed the armorer factor, coupled with the XD not being as easy to detail-strip for servicing. Keep in mind that most US LEOs must buy their own pistols, and quite a few of those must be their own armorers, or send the pistols to the factory or service center.
I don't have a dog in this fight, as I don't care for the S&W M&P, Glock, nor the XD. I find the SIG P229 tolerable, and even likable. I work for a quite large PD that requires us to buy or otherwise furnish our own .40 duty pistols, with the P226, P229, G22, G23, M&P40, and a couple of XD pistols being on the approved list.
Another factor is armorer support. Glock armorers are everywhere. I don't know about S&W armorers, but S&W itself is known for quick attention to LE pistols sent in for service. I work a second job at an FFL, and seem to remember reading in a firearms industry publication several years ago that one thing hurting XD LE sales was indeed the armorer factor, coupled with the XD not being as easy to detail-strip for servicing. Keep in mind that most US LEOs must buy their own pistols, and quite a few of those must be their own armorers, or send the pistols to the factory or service center.
I don't have a dog in this fight, as I don't care for the S&W M&P, Glock, nor the XD. I find the SIG P229 tolerable, and even likable. I work for a quite large PD that requires us to buy or otherwise furnish our own .40 duty pistols, with the P226, P229, G22, G23, M&P40, and a couple of XD pistols being on the approved list.