In Premiere Pro it's called Hover Scrub and you can do it while Icon View is selected in the Project tab.
It would be great if it also worked in the Source tab, Program tab, and Timeline tab, but it does not.
If you choose to post a feature request, simply put "Enable Hover Scrub in Source, Project, and Timeline.
If you happen to have a multi-button, programmable mouse, it's possible to set one of the buttons to click and hold. Certainly not the same thing.
If your mouse has a scroll wheel, that can work to shuttle through footage in the Source and Program, but it really isn't the same a iMovie and Final Cut Pro X Skimming.
There's a mouse that I really like by Logitech (Logitech MX Anywhere 2S Wireless Mouse) that has a speed-adaptive scroll wheel with two modes. When set to freespin mode, it allows you to move very, very quickly through footage in the Source and Program. When set to ratchet mode, it allows you to move very precisely. Once you get used to it, it's hard not to have it available.