I just bought a Pilot Lightive in black. I needed something for work. My other fountain pens in my collection, except for my Platinum Procyon, dry out quickly. Apart from this one pen the others are snap lock lids with no seals. This had meant the pens dry out quickly.
The Procyon being a screw lid with seal means it does not dry out as easily. Nor does it seem to leak. This is impressive. Hats off to Platinum.
This Lightive, although is a snap lock lids, has a seal. so it should not dry out like my Cocoon (Metropolitan) does. The pen is light as it is made of higher grade plastic but it is plastic nonetheless. Only time will tell how long it will last. I am guessing durability will be an issue because of the material.