Can confirm. Followed IIMT's advice starting about 3 weeks ago. Lower blood pressure, and sleeping 2 hours less yet sleeping deeper and feeling more rested (in part, because I no longer have to get up at night to urinate). I'm also getting more productive work hours in as I'm not "crashing" around 3pm and feeling tired and so I'm finding it easier to carry on with work until 5 or 6 with no problem.
Found a great Colombian organic Swiss water decaf that tastes just as good as the caffeinated stuff and being a lover of coffee this has really helped. Thus, for me, getting off caffeine was easy compared to cigarettes and alcohol.
I love it so much and it tastes so much better than regular coffee that we took that machine on a road trip back to Texas once haha. We also once took it to a church coffee hour after a service at our deacon's house and I made lattes and cappuccinos for dozens of people, one at a time - that was fun. Hubby has a special way of making it so it tastes the best, and he delights in making my morning cup and bringing it to me in bed. Most mornings we do one of my favorite things - coffee and cuddles. It's the BEST! (He rarely drinks coffee.)