I'm almost sure that it is not an Isle of Wight standard production piece, and pretty sure that it's not Isle of Wight at all (ie; not even a trial or experiment). I'd need to see it and handle it to be 100% sure, but I think I have been 'fooled' by these before.
I spot something that looks like 'Meadow Garden' or 'Flower Garden' across a crowded antiques fair, then get up close to it only to realise it isn't what I thought it was at all. I'm sure this has happened to me with these vases before, and if you are saying that the pattern carried on all over the base, then yes I have.
Thing is, I can't be of any more help, as I have no idea who did make them, although I'm thinking someone possibly in the Far East or Central Europe in the last 15-20 years at the earliest. I won't say they are direct 'copies', but they certainly share certain characteristics of both 'Meadow Garden' and 'Flower Garden'!
Hope this helps a little, but it's certainly worth confirming my opinion with the Isle of Wight studio itself.