Definitely worth ago but be prepared to change back because I think it may be bike dependant.
1. On my Mongoose HT, putting on wide bars with a 70mm stem felt immediately beneficial.
2. On the Giant TranceX, putting a 75mm stem made it twitchier but easier to get off the back (TranceX had quite a short effective TT). But when I put the wide bars on, it felt like it had lost something important. I switched back to the narrower light bars.
My theory is that it's to do with the front weighting/slackness. My Mongoose is quite slack and heavy at the front and I reckon the big bars helped improve the control. My Giant is front light and a bit steeper and the big bars just upset its normal agility.
But deffo worth a go.