No personal experience, but reviews aren't great on that ^^^ unit.
The compressor - Koch KT20252 - I got years ago for work on BMW and Mercedes should work with the strut off the vehicle. I did a quick look at the Koch website, and I can't get my unit to come up, so may be discontinued. Bav Auto lists a similar unit - about $250.
BMW Parts and BMW Accessories | Bavarian Autosport Search for P/N B8800017. Ebay has same style at a third that cost - but tool brands I don't recognize.
In any event, I have used my compressor quite a bit - safe, works quite well, and heavy as h3ll. Plan on clamping the tool in a vice, then all is good. Recommend this style - see photos.