This is a stunning pen, but with an inlaid nib it will be the one you will never let any one else use, immediately becoming *that* guy or gal. Apparently there's a trick to avoid problems if you use a converter: fill it, return five drops back to the bottle, return the piston back to its filled position.
somePurchaserSince you'd be filling by dunking in an bottle, aspiring the ink, then only returning those five drops, presumably some ink remains in the feed; since I don't have this pen I am merely conveying a technique that apparently has worked for those who do have it, from a well known pen forum...
SilvioThis is a fairly standard procedure for any bottle-fill pen. For example, it is described in the instructions that come with Pelikans. My understanding is that it is to prevent excess ink 'burping' from the feed onto the paper when first beginning to write.