Hi Phill, my comments were based upon using the bike perhaps three to four times a week, in some fairly harsh conditions.
The soil conditions here are particularly aggressive in composition, as in forest clay which has a make up of sand as fine as flour, and is also very corrosive.
With those type of conditions, the bushes are going to wear. To be fair though, in my time of ownership, I have only had to perform one rebuild, which was very recent. In the case of KTM ownership, if you were to budget £80.00 every couple of years, it doesn't then seem so bad.
http://www.flidistribution.co.uk/parts-accessories/bearing-kits
From posts on this forum, and other forums, I wouldn't touch a Haibike with full suspension.
With many comments and photos from Google images showing bikes held together with cable ties, clearly there is an issue somewhere.
The next issue with Haibike is the cost of consumable parts come rebuild time. It would appear that Haibike owners get stung big time.
https://www.e-bikeshop.co.uk/eBike-Spare-Parts/Haibike-xDuro-OEM-Swingarm-Kit
It would be interesting to know what the bearing/bush and bolt kit costs are for say Cube, Scott and Trek. I'd imagine them to be comparable to the KTM cost.
For a fair bit of my local ridng, other than summer use, I don't feel that I get the full benefit of an FS bike, the exception being on the South Downs.
The reason being that if I averaged my winter off road riding speed when riding close to home, I suspect that it would come out below 10mph. This is due to both the generally muddy conditions and tight technical terrain.
I love tight single track/or rather no track riding, where a lot of time is spent exploring and weaving in and out of trees at low speed. Obviously enjoy speed as well though.
There are a few limited places here where FS has a clear advantage, but as said, it is quite limited. Riding my hardtail mtb with low tyre pressures takes care of roots and rocks, and climbing is easy.
The appeal of zero rear suspension maintenance and slightly reduced weight, are quite a plus to hard tail bikes.
I also personally think that a lot of bull is spouted about benefits, pros and cons etc. I doubt that many FS riders even own a suspension pump, or even know how the system should operate and be set up. Many have enough trouble marinating correct tyre pressures!
I'm not trying to dissuade you from buying one, and any added comfort is a welcome addition, but I do wonder if you would really see any major benefit.