No. Also if you don't renew for 3 years, just pay and you get your cert back. In this the difference between other agencies at this is that they directly give you a card without expiration date.So if a certified GUE diver chooses to sometimes dive a non GUE equipment configuration......or dive SOLO....... then are there any repercussions or "pushback" from other GUE divers or the GUE organization?
But it is not forbidden to dive solo or take other equipment if you have a gue cert. Like it is not forbidden to have a padi card and an ssi card. I have teached divers with a gue card from fundies to c2 for example self sufficient or normoxic trimix, or ART. They don't get into trouble or something. The only thing is that gue instructors are officially not allowed to dive solo.
That is why I wrote already that you can dive with 'gue mindset' without a gue card, or can have a gue card and dive without its 'gue mindset'.
In this topic again, an agency is set as 'best cult'. But at the end, the differences are small. Better is to talk about 'team mindset' or something in my eyes. Not all instructors from all agencies teach team mindset the same way, but in all books it is written. And in some books there is a chapter about solo technical diving, which is not part of the gue curriculum of course.
I never had a problem of diving with gue/dir orientated divers or with divers that are absolutely not. I think it is a good idea that all divers know about the advantages and disadvantages of 'best mix' diving and the same with standardgases, because also standardgases have disadvantages. In my opinion the best divers are the divers that are open for both and then can dive in a team. Also 'mixed' teams with oc backmount, sidemount and ccr are never a problem. I never had big discussions about diveplans for trimixdives. But here a thing happens that I do not like. There are divers teached by only using a computer and they don't have any feeling about a diveplan without using a computer. Or get lazy and forgot what they learned. If you give me a diveplan to do 15 minutes at 100m, every normal plan will give a total divetime between 95 and 115 minutes divetime, then it are only details that must be discussed. But also here it is not that 1 agency does it worser than others, it is the indivual diver who does it. I have seen divers who absolutely told me they do 20m/minute swimming in a no flow cave. I have seen gue divers who forgot that if you do 20 minutes at 60m, the total divetime will be around 60 minutes.
This has to do with the diver itself, if you don't practise anymore, you level goes down. So maybe we have to add practising as right mindset for every techdiver, not only dir or gue.