Replying to ON3P Custom Stiff Flex Help

Hey Guys - I currently ride a Jeffrey 108 as my daily driver (will ride everything from steeps to groomers to rails on a regular day). They are a bit beat so I was going to put some Shifts on them and then stick my pivots on a new pair of Jeffreys. I mostly ride at Squaw Valley/Alpine meadows and was considering splurging on the customs with stiffer flex due to the snow that we get in Tahoe + the terrain at these resorts. Has anybody ridden these and have any feedback?

I like to jib around - lots of butters and presses - but do sometimes find myself folding the tails out at times when landing backseat on backies or really any trick bigger than a 3 (lol). ON3P customer support basically said that the stiffer is only about 5 percent stiffer than the regular layup so would assume they'd still be find for flexing the skis out but just wanted to get some user feedback on if they are still jibb-able/if it makes enough of a difference to be worth the extra $$.