Mine got delivered FedEx and a Signature was not required, but about UPS just call them and give them your tracking number and they will tell you if a Signature is required. if it is and your not there leave a not on your door to hide it somewhere and then take the note, or have a neighbor sign, or have it delivered to your place of work.
I've had a 6 delivered by FedEx. All said signature required and the FedEx guy was standing there with his little thing for me to sign. I wasn't going to risk them not leaving it. When it is from anywhere else, they usually drop the box and run before I can even get up. So, I'd say YES based on MY experiences but mine are with FedEx, not UPS.