I’ve had the Halo screen protector (HD) installed on my Nexus 4 for about 2 weeks so far.

Pros:

• So far it works will with my TPU case, I’ve heard that other protectors don’t work so well with cases.
• Dry appliance, so you don’t have spray the device with liquid.
• Nice feel when touching and swiping.
• 3 protectors in the pack

Cons:

• The first protector I applied didn’t stick to the screen at all the 2nd one did.
• The screen protectors don’t seem to have been packaged in a clean environment as the had some does on hem when I unpacked them.
• The right hand side of the screen protector has come away slightly in the days after the install, however it doesn’t seem to be pulling away more.

Conclusion:
Overall I’m happy with the protector so far, however I think there may be some quality controls issues in the production, so you might have to use more than one of the protectors to get a good install.