I owned a 44 inch Epson 10k, Epsons very first pigment machine, that had a very large super well made head design with a big durable cap assembly that always fit snugly, and it never clogged with their archival pigments, ever. In a decade of running the hell out of it I never even came close to filling up the big waste tank that came in it. And I could let it sit there for weeks unused. After 10 years I turned into a piezo k6 black and white printer for 2 more years, still didn’t have missing nozzles or have to do nozzle checks. It had a different pressurized cart and the same heads were used in the Roland Hi Fi wide format machines that used two of those heads and rebranded Epson pigments and these didn’t clog either. This was like 18 years ago!
I'm pretty sure Epson's first large-format units were the dye Stylus Pro 9000 in 1999 and the pigment Stylus Pro 9500 in 2000 (these were essentially the same machine, and you could run dye or pigment in either, and the firmware was interchangeable). Those heads were also used in various Roland and Mutoh products. I have run both of those Epson models as recently as a few years ago for signage and topo maps, only stopping when spares became unavailable (I still have loads of maintenance parts, pretty much everything except heads, if anyone wants them free for the shipping costs) and inks became more expensive due to being a rarity - there are only a few aftermarket manufacturers that still produce new cartridges if you ask them
very nicely (I have a few sets of unopened new inks for these as well). But those heads did clog and delaminate, just not as much as the newer pre-P10K/P20K heads. Those heads had way fewer nozzles compared to the newer models, and produced larger ink droplets. I've been very happy with the clog-resistance of my P10K units, including one that sat for 2 years in storage before I bought it - it fired right up and produced a good nozzle check after a few cleanings.
However I don’t agree that piezo heads necessarily have to have all these pressure issues and wasted ink clearing nozzles, and quickly worn out heads, that’s what their sales guys are told to say.
I have a different P10K that I bought with nearly 25000 B0+ equivalent prints and it is still on its original print head with a perfect nozzle check. The print shop that had it dumped it at the aforementioned 38 months, after the extended service ran out, because there was a problem with the pump cap that caused it to do pointless cleaning cycles and report imaginary head clogs. $250 for a new pump cap assembly and it was working perfectly.
I'm sure there are some of these units that were bad from day 1 and others that never had a service call ever, with most falling somewhere in between. Mine were both mid-double-digit serial numbers, so very early production. It is possible that the factory took greater care with those early units.