No. Illegal per OnePocket.org Rule 5. Illegal per CSI Rule 5-15. WSR doe not address 1P.
Buddy
Actually,,,,,,,,,,, one pocket Rule 5 says,,,,,,,,
5. Jumping
Players may use jump shots in One Pocket as long as they are performed with the player's own standard playing cue using legal jumping techniques as defined in General Rules. Specialized jump cues are not permitted in One Pocket.
Please note that many players, poolrooms and tournament directors have differing opinions on specialized jump cues. It is recommended that players check with their opponent, the 'house man' or the tournament director prior to an important match to come to agreement on whether specialized jump cues shall be permitted or not.