I do not have one of those but do have the one it copies namely a Dixon bate that I have had for 30 years and yes much easier as you can get it spot every time.
I can be level side to side within a minute, no faffing around with ramps, just unhitch, slip the buldog under the lowest side wheel & with a ratchet fitted with a 19mm socket level the van side to side no probs, you can even introduce a bias to make sure the shower tray drains fully!
I've owned one of these for years a d wouldn't travel without one. Just be careful when pitching on soft ground as the leveller can sink and be a bit of a boogar to pull out. In those conditions I reverse the 'van on to one of the those plastic tread strips first. Does the trick every time.
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