Which second lock?

[Pietrach]

Hi all,
I have no real interest and skill in lock picking, but I thought I could use your knowledge to secure my flat properly.
My main lock is a euro cylinder lock with a multipoint lock that locks the door in three places.
When I moved in I replaced the cheap unbranded euro cylinder with Yale Anti-Snap Euro Cylinder.

My first question is - is this lock any good?

Second question is: There is currently no means of locking the door from inside except for turning the key in the euro cylinder lock. This is not the most convenient and I am looking for some sort of easy to install lock with a knob inside and key outside. However, the door has glass panels which could be easily broke and the knob turned to open. Is there any lock out there, that has both, knob and key inside and key outside? So that I could just use the know on everyday basis but I could still lock it with a key from inside for the night or when on leave. Naturally such key would need to disable the knob function.
Is this clear or not really?

Thank you for your help.
Pietrach

[Solomon]

Nope. You can either have a thumbturn or a double sided cylinder, no such thing as both. Unless you want 2 seperate locks in the door, but you can't have 2 euros lol. You could have a euro and a rim cylinder up higher in the door, that's pretty common... but if someone can just smash the window and reach through then having an additional rim latch isn't gonna make any difference.

Would a foot bolt be suitable? They're not the strongest but you can engage/disengage them quickly and it'll stop someone from simply opening the door from the outside. Obviously you can't have it engaged while you're out, but it's easier than locking from the inside with your key every time. So the idea is, use the foot bolt while you're in the house and lock the cylinder from the inside for additional security when you go to sleep... and when you're out, you have a double sided cylinder which can't be operated from the inside by smashing the glass and reaching through.

[mhole]

If the door is double glazed, and relatively modern it will have toughened glass, and will be pretty tough to break. I'd be more concerned about the letterbox as a means of entry.

[MBI]

Abloy makes an American style deadbolt lock with a thumbturn which can also be secured from the inside with a key, for exactly the situation you have. They also have a mortise lock with the same function. Unfortunately, I've never seen a euro profile cylinder with that feature.
I don't know that it doesn't exist, but I haven't seen one.