In recent travels to southern part of Korea I took the Ricoh KR-5 35mm slr, the Pentax ist ds, the SMC Pentax -A 1:1.4 50mm and the Vivitar Close Focus Wide Angle 28mm 1:2.0
The ist ds and the -A had to endure being in the checked baggage, they got fairly cold at times but survived Ok.
The ist ds and 28mm were used in the day job, and on days off work I used the film slr mainly with the 28mm.
The -A lens is the only one in my collection of -M lenses so I just use its ap ring.
Some with the ist ds and the 50mm: