I purchased this from the Japan Ujuku Shop -- Ujuku -- a couple of weeks ago and received it today. It took a while from the time I placed my order until I got an e-mail confirmation and paypal invoice, but all in all, the service was great and the price was very fair. (My favorite part was the tag line on the e-mail confirming shipment that said, "Since I cannot speak English, please do not call.")
I have a regular Pilot VP (blue carbonesque) and, while I like the pen and find it to be a very convenient and reliable writer, I have always found the clip to be in the way and thought it a bit too heavy, making it a pen I like a lot, but don't really love. The Capless Decimo addresses both of these problems -- it's a pen I can love. It is a slimmer pen than the VP and the clip has a lower profile than the VP clip, so it's not as intrusive (to me) when writing. It's also a lot lighter in the hand, making it extremely comfortable to write with.
The innards are also interesting: instead of the twist converter that came with my VP, the Decimo comes with a squeeze bulb converter (rather like the one in my Pilot Knight) and a rather large, empty plastic "cartridge" that fits under (and completely fills) the metal cone that comes with the pen. Although the opaque rubber-plastic sac in the converter prevents me from seeing how much ink is in my pen, I can never see how much ink is in the pen with the twist converter either, so I don't see that as too much of a downside. I plan to try filling the "cartridge" that came with the pen with a syringe and see how it works. Either way, I find the filling system to be an accetable equivalent to the one that came with my VP. Aside from the differences in the filling mechanism, the metal portion of the nib unit looks the same as the one in my VP and I believe it would be interchangeable (though I haven't tried it yet to be sure).
The nib is a wonderful, smooth Japanese broad that writes more like a European medium and is just about the perfect width for my writing. It is marked 18k and is silver in color (the nib in my blue carbonesque VP is 14k yellow gold, even though the trim on the pen is silver -- the silver colored nib unit in this pen was a nice surprise).
I am a big fan of Pilot pens in general and really appreciate and admire their high-quality workmanship and great nibs (in addition to my Decimo, I have a Custom 823, a Falcon, a Knight, and a VP). I really like the Decimo and predict that it will be a pen that I will leave on my desk and use on a daily basis.
Edited by Mike S., 17 April 2007 - 12:54.