Ash,
Yes you absolutely can use the slide tab for the Twister Safari.....this is how I have mine set-up on my Allegiance and it works flawlessly. It also gives the cord a nice neat/ out of the way location tucked up along the cable guard rod.
Run the cord through the tab and knot off,cut and melt.......then use the tuning screw to fine tune timing.
When you mount the rest also you will probably just about need to air the windage out to the left to make centershot.......but make it it will.