The majority of my chases since 1998 have been with NOAA radio and a HH scanner (1996-1997 was just FM radio). I've found that having technology VS not having it isn't what makes a chase day easier or harder for me, but what kind of setup it is. Doesn't matter how much gear we have in the car, if the setup is complex and difficult to pinpoint, it's gonna be a long day...and if I'm using my eyes and a paper map on the type of setup that I naturally understand, it's gonna be a fun day without the gear.
I think a lot of chasers could chase old school, but I also think very few of them truly trust their own forecasts. It's one thing to sit in your computer chair and say what you think will happen on ST...quite another to put that to the test for a 500-mile chase. When I make a "forecast" or "chasecast" or whatever, I pretty much have a feeling before I leave how the day is gonna go. Certain types of situations give me trouble while others I seem to have a natural nose for. Regardless of my "gut", I still go out on any day where I believe I can see a tornado.
There really is no need for further data once you leave the house with today's at-home technology, if you truly believe in your forecast (adjustments can be made visually through a pre-conceived contingency plan or "back-up" plan, along with real-time observations and on-the-fly changes). I think most people who use data do it more for a nerdy techno passion than because they really need it. Seems most chasers today are hydrids who enter the hobby through other interests, mainly IT types who are gearheads and love to tinker with software and all that gogglygoo and of course, the photog.
I hate technical crap, I have zero patience for it, and still photography does nothing for me. So right outta the box I've eliminated 99.9% of the crap most guys carry around. Not to be defiant, but because it doesn't help me (and I'm not interested in it). WX-WORX, GR2, 3, ??? nor the internet has ever saved me when I blow a forecast...but they have pinpointed what we were already on top of many times.