Hi from a Dutchman! Hajenius has been mentioned. If were talking pipe tobacco we must disappoint your friend; there is zero to none interesting stuff here, mainly STG and Macbarren stuff, HU stuff doesnt make it here. There are some My Own Blend offerings which are largely aromatic.
Offcourse there are LcdH and Habanos Certified sellers which might have a interesting selection. To bad lounges have been closed from 1.1.2022, smoking inside anything (even a tobaccoshop) else than your house is banned. If I may give another suggestion let him visit
www.cigaragua.nl for cigars, its near the LcdH in the Van Baerlestraat. Really interesting shop with only a Nicaraguan selection of cigars, but still one of the biggest selections of the country. I don't think it has a larger offering than you can get in the USA though.
This last part is exactly what I meant by "not the friendliest." Dutch and German folk, in my experience, are cut from a rather efficient and direct cloth. Way different than the ball-tickling your average person on holiday expects from their chosen resort staff. That's why I've always had a good time with the Dutch and Deutsche - no fussing around! Right to business! Oktoberfest is beautiful!
Thank you for your kind words I guess ?. Joking aside, you indeed generally get a straight to the point attitude, but this also depends in what region you are. When visiting the larger cities in the West (Amsterdam, Rotterdam, The Hague, Utrecht) people can seem a little snobbistic, which is more to be understood as your described straight the point and efficient way. Going the Eastern and Southern part you can expect a more friendly approach I have experienced when visiting on holiday. You could even say the Southern part is almost equivalent to the American Southern Hospitality mentality.