Assuming these guys on-sell a range of bearings from various suppliers (ie: they are not manufacturers of bearings), would think the onus would be on you to specify the type of bearing you want, be it stainless, sealed, shielded. ceramic, ABEC number etc etc etc
They are into RC so should have experience around quality high RPM bearings, for fisho's its probably more critical around corrosion / longevity issues. However I wouldn't think you would get into too much trouble giving them a crack as long as you know what you are after.
Would like to hear your feedback on em
Cheers
Blood Knot