Generally speaking, I've preferred teaching perl developers a higher level of understanding to catering to lower levels. And, honestly, I find $foo->() eminently more readable than &{ $foo }() anyway.

Of course, the problem I've had with my approach has been getting said developers to want to learn more... which generally tells me how much I want them to continue to work on the code or not. If I had any say in who worked on the perl code, there'd be much higher turnover thus far. The lack of desire to learn, nay, the desire not to learn, would be a huge factor in this.