There have been a few lads on the 4x4 forums I frequent who have bought them. Althought the 4x4 version has a "4wd lock" (not diff lock), the drive shafts are a weak point and do not take kindly to sucky mud or sand.
The 4wd "system is from Nissan (they supply the electromagnetic torque converter for shifting power around the wheels), but the running gear is Dacia.
I would think if used for normal fishing (rough tracks/wet fields) it would make a good cheap runabout. If you get one, let us know how you get on please.
Also worth reading Honest Johns report, the 4x4 version is £13k for the diesel, the 2wd, £8995...depreciation on the 4x4 is HUGE but the 2wd is only 34% over 3 years.
Issues with gear boxes reported including several lasting less than a day. Ouch!
Owners reports interesting "The gearbox that lasted one hour's use has been replaced"