Think about the risk that has transferred over to your personal devices. You take ownership of a BYOD as your own, even if you receive a stipend for its purchase. So now a BYOD affects you personally, and not only the company. For example, if you work in an environment where your BYODs could be damaged. This could range from the basic (spilled coffee) to the extreme (working outside in a harsh environment). What if its cosmetic damage?
Obviously I have some personal experience in this. I took a BYOD (Macbook Retina) on a business trip, and we were making coax cables. My colleague dropped his end and the center conductor whipsawed onto my brand new screen, leaving a scratch. So now my supposedly best in class screen has a smiley face scratch on it. You could argue it is cosmetic. So how you handle this? I talked with my boss and it became clear that having a BYOD means accepting some liability. To be clear, my job is fairly office environment-esque, just general IT tasks for the most part. I use my laptop for email, programming, office suite etc. But I could see days where I need to bring it on a man-lift or in a harsh environment. Not a great prospect.
There are certainly extremes where you can expect some company liability, but it opens many questions about how determine if/when risk of BYOD damage is a customer issue.
I'm not going to spend this much money, stipend or not, and have it get all jacked up. I'm leaning towards letting the company carry the risk going forward...