From experience, short answer - NO. Long answer, yes *if* you have an antenna analyzer. The 'stick can be finicky to set up on 40m in my experience, high Q / narrow bandwidth, and you will need to tweak the coil tap position and counterpoise depending on setup environment. Once set up and adjusted to acceptable VSWR with an analyzer, I've had this work pretty well with QRP direct to the radio. BUT - you indicated in a prior post, that you're looking for short-ish communications (500-2000 km). A vertical may not be your best bet. Someone more knowledgeable than myself can chime in here, but verticals have low take-off angles better suited for longer signal paths. An inverted-V or similar, even close to the ground at feedpoint, is a better way to get NVIS and shorter signal paths. And, added bonus, you shouldn't need a tuner or ant ananlyzer. An analyzer is helpful once to trim the antenna and find its bandwidth, then stick to that range. And it's easier to coil up and carry that the 'stick. You can make one of these out of an SO-239 connector and some speaker wire for about $5. I've used both for various QRP excursions, and if I were trying for 40m, 500-2000 km, I'd go with a simple DIY wire inv-V setup over a Buddiestick - assuming there will be tree limbs or similar readily accessible feedpoint supports available. For NVIS these don't need to be very high up - on 40m, I've gotten good ~1500 km signals at only 10' centre feed heights!