Yeah the whole Chain Chomp and subsequent YacheChomp discovery was pretty interesting to watch fold out. One of my favourite suprise sets would be Donut's SubRev Yanma.Garchomp is a fantastic example of why this kind of thinking should be encouraged. For the first year of DP play, Yache Berry wasn't even listed in the analysis and it wasn't until early 2008 that it even made its way into Other Options. Eventually it caught on and as we all know, YacheChomp was the set that sealed Garchomp's banishment to Uber. It makes you wonder if perhaps there's another Pokemon out there just waiting for people to give him that specific 'unorthodox' item to push him to the next level.
There is where the problem lies IMO, the boost of the Plate just isn't comparable to a Choice Band. CBScizor works because it hits hard and ideally you don't want to sacrifice that.Bullet Punch boosted by the plate is about as powerful as if Scizor were Banded, allowing you to maintain an illusion. Occa Berry and Shed Shell on Scizor may also be viable.
The one problem with this strat is that they will just use Toxic again, so unless you are setting its kinda pointless. I do see the point on sweepers that people will usually try to status though.Lum Berries are great on Bulky Waters and other tanky pokemon.
People LOVE to use Toxic on Bulky pokemon. And unless that pokemon has Rest, Lum Berry is a great choice.